Get started with your FREE initial assessment!https://glasertutoring.com/contact/#AcidsAndBases #KwChemistry #OpenStaxChemistry C6H5NH3+, as the acid, is a proton donor. Many people like to put lemon juice or vinegar, both of which are acids, on cooked fish (Figure \(\PageIndex{1}\)). Explain. THEOCHEM, 2007, 813, 21-27. Solve for x and the equilibrium concentrations. It is also dense, and can be stored for extended periods. A conjugate base contains one less H atom and one more - charge than the acid that formed it. Is a solution with H+ = 9.52 x 10-2 M acidic, basic, or neutral? Discover what acidic and basic salts are, see examples, and predict the pH of salt solutions. The hydrogen oxalate ion is amphoteric. ; Bronsted-Lowry came up with another definition you may have never heard before.. fox hill country club membership cost. Likewise, it is also prone to oxidation: while freshly purified aniline is an almost colorless oil, exposure to air results in gradual darkening to yellow or red, due to the formation of strongly colored, oxidized impurities. The nitrogen is described as having high p character. How would you explain conjugate acids and bases? Is an aqueous solution with H+ = 5.4 x 10-4 M acidic, basic, or neutral? It ignites readily, burning with a smoky flame characteristic of aromatic compounds. Check out my picture. Explain. Explain. 2007, Wiley-VCH, Weinheim. Some handbooks do not report values of Kb. pH of Solution. Thank you for your participation! Water can act as an acid or base depending on the other reactant. Is NO2 acidic or basic? - Quora Boiling the solution will drive out carbon dioxide. Balance the equation C6H5NH3{+} + OH{-} = C6H5NH2 + H2O using the algebraic method. The first azo dye was aniline yellow. There are 6 that most consider to be the "STRONG" acids: HCl, HI, HBr, HNO_3#, H_2SO_4# and HClO_4#. The fourth column has the following: 0, x, x. Such as in the song Jimmy by M.I.A look at aaja in the dictionary My indian boyfriend told me is meaning come to me, 6 Answers I have never had or heard of that particular brand, but have had several here in Canada, plus a number in the Caribbean and Asia, and there all the same, small cut hot dogs in a can, no need q now please.. Name the major nerves that serve the following body areas:? How many grams of the chloride salt of the conjugate acid must be combined . He named it kyanol or cyanol. Favourite answer. What are the Physical devices used to construct memories? NH4+ Weak acid. As you may know, hydrogen ions (H +) are found in acids and hydoxide ions (OH -) are found in bases.. Arrhenius in the 1890's made the following discovery:. (a) KCN (b) CH_3COONH_4, How to classify solution either acidic, basic, or neutral? Also (NO ADS), although you have to pay to see the steps it dose occasionally let you see . However, even if we mix stoichiometrically equivalent quantities, we may find that the resulting solution is not neutral. These polymers exhibit rich redox and acid-base properties. For example, reaction of aniline with sulfuric acid at 180C produces sulfanilic acid, H2NC6H4SO3H. [7] Alternatively, using Buchwald-Hartwig coupling or Ullmann reaction approaches, aryl halides can be aminated with aqueous or gaseous ammonia.[17]. How much work does it take to change the displacement, working against the force, from 0.730m0.730 \mathrm{~m}0.730m to 1.35m1.35 \mathrm{~m}1.35m. Organic Chemistry 331- Sapling Learning CH 3, Introduction to Chemical Engineering Thermodynamics, Hendrick Van Ness, J.M. Through these intermediates, the amine group can be converted to a hydroxyl (OH), nitrile (CN), or halide group (X, where X is a halogen) via Sandmeyer reactions. So the following is an educated guess. Answered: C6H5NH2 + H2O <-> C6H5NH3+ + OH-. | bartleby Milk of Magnesia is a suspension of the sparingly soluble base magnesium hydroxide, Mg(OH)2. Note that some of these aluminum species are exhibiting amphiprotic behavior, since they are acting as acids when they appear on the left side of the equilibrium expressions and as bases when they appear on the right side. base + acid Conj A + Conj B. not only neutralizes stomach acid, it also produces CO2(g), which may result in a satisfying belch. Explain how you know. 1.0 * 10 9. How can a base be used to neutralize an acid? 1. What is the pH of a 0.14M solution of aniline (K b = 4.3 x 10 In chemistry, a salt is an ionic compound that can be formed by the neutralization reaction of an acid and a base. NaClO_4, How to classify solution either acidic, basic, or neutral? HClO 4. . You can find the polarity of a compound by finding electronegativities (an atoms desire for an electron) of the atoms; Carbon has an electronegativity of 2.5, compared to Fluorines A) Enter the the Ksp expression for the solid AB2 in terms of the molar solubility x. Soon thereafter, applying a method reported in 1854 by Antoine Bchamp,[28] it was prepared "by the ton". N 2 H 5 and N 2 H 4 +D. Aniline reacts with strong acids to form the anilinium (or phenylammonium) ion (C6H5NH+3).[18]. Hypochlorous acid gives 4-aminophenol and para-amino diphenylamine. Aniline was later replaced by hydrazine. If we can find the equilibrium constant for the reaction, the process is straightforward. acid: C6H5NH3+" base: H2O conjugate acid: H30+ conjugate base: C6H5NH2 Am I correct? The chemistry of aniline is rich because the compound has been cheaply available for many years. These split apart 100%. There are a number of examples of acid-base chemistry in the culinary world. Is an aqueous solution with H+ = 1.0 x 10-4 M acidic, basic, or neutral? Note that the base hydrolysis equation is a complete Brnsted-Lowry acid-base reaction, with water as the reactant acid. A byproduct of the pickling process changes the flavor of the vegetables with the acid making them taste sour. [7], Other uses include rubber processing chemicals (9%), herbicides (2%), and dyes and pigments (2%). Aniline (from Portuguese anil'indigo shrub', and -ine indicating a derived substance)[6] is an organic compound with the formula .mw-parser-output .template-chem2-su{display:inline-block;font-size:80%;line-height:1;vertical-align:-0.35em}.mw-parser-output .template-chem2-su>span{display:block;text-align:left}.mw-parser-output sub.template-chem2-sub{font-size:80%;vertical-align:-0.35em}.mw-parser-output sup.template-chem2-sup{font-size:80%;vertical-align:0.65em}C6H5NH2. What is the conjugate base of oxalic acid, #HO(O=)C-C(=O)OH#? Acid. C6H5NH2 + H2O = C6H5NH3 + OH - Chemical Equation Balancer The reduction of nitrobenzene to aniline was also performed as part of reductions by Antoine Bchamp in 1854, using iron as the reductant (Bechamp reduction). What is the conjugate acid of C6H5NH2 What formula do you use to calculate pH when given the molarity of an acid? Acid with values less than one are considered weak. Calculate the equilibrium constant, K b, for this reaction. It is a strong base. Explain. Question: Is calcium oxidean ionic or covalent bond ? Solutions that contain salts or hydrated metal ions have a pH that is determined by the extent of the hydrolysis of the ions in the solution. The pH of the sample in the flask is initially 7.00 (as expected for pure water), but it drops very rapidly as HCl is added. Legal. A substance that is able act as both an acid 2. However, practically all hydrated metal ions other than those of the alkali metals ionize to give acidic solutions. This conjugate base is usually a weak base. Today, the name of BASF, originally Badische Anilin- und Soda-Fabrik (English: Baden Aniline and Soda Factory), now the largest chemical supplier, echoes the legacy of the synthetic dye industry, built via aniline dyes and extended via the related azo dyes. The early manufacture of aniline resulted in increased incidents of bladder cancer, but these effects are now attributed to naphthylamines, not anilines. This page titled 6.6: Acidic and Basic Salt Solutions is shared under a CC BY license and was authored, remixed, and/or curated by OpenStax. A. For which of the given acids, whose #pK_a# data are listed, will #pH# be HIGHEST at the equivalence point when titrated by #NaOH(aq)#? A solution of a weak acid reacts with a solution of a strong base to form the conjugate base of the weak acid and the conjugate acid of the strong base. You're left with an amine and the hydronium ion for products. In reactions where the acid is a hydrogen ion containing compound and the base is a hydroxide ion containing compound, water is also a product. Is a solution with H+ = 7.0 x 10-13 acidic, basic, or neutral? However, since the Ka > Kb, the solution must be acidic. Is a solution with H+ = 1.2 x 10-4 M acidic, basic, or neutral? Is C6H5NH2 an acid or base or neutral - Bengis Life [24][25] In 1842, Nikolay Nikolaevich Zinin reduced nitrobenzene and obtained a base that he named benzidam. In the equation -ClO 4 + HNO 3 HClO 4 + NO 3- the order, from left to right, for Brnsted-Lowry acids and bases is A. acid + base base + acid B. acid + base acid + base C. base + acid base + acid Youre left with an amine and the hydronium ion for products. Become a Study.com member to unlock this answer! , Using Standard Molar Entropies), Gibbs Free Energy Concepts and Calculations, Environment, Fossil Fuels, Alternative Fuels, Biological Examples (*DNA Structural Transitions, etc. Explain. What is the conjugate acid of C6H5NH2 What formula do you use to calculate pH when given the molarity of an acid? The key in determining the Bronsted-Lowry Acid and Base in a reaction is to examine the chemical equation. Part (a) of Figure 16.17 "Solution pH as a Function of the Volume of a Strong Acid or a Strong Base Added to Distilled Water" shows a plot of the pH as 0.20 M HCl is gradually added to 50.00 mL of pure water. A solution of HNO2 is at equilibrium: HNO2(aq) + H2O(l) H3O+(aq Explain. How do you identify conjugate acid base pairs? Note: in the first four problems, I give the K a of the conjugate acid (for example, the ammonium ion in Example #1). One example is the use of baking soda, or sodium bicarbonate in baking. Question: Salt of a Weak Base and a Strong Acid. Explain. answer (1 of 5): no2 is an acidic oxide. 3 Answers. Determine whether a 0.0100 M C6H5NH3F solution is acidic, basic, or neutral. We see that HCO becomes HCO. It is a salt compound that will dissociate in a 1:1 ratio of anilinium cations and fluoride anions: Our experts can answer your tough homework and study questions. * Compiled from Appendix 5 Chem 1A, B, C Lab Manual and Zumdahl 6th Ed. What this means is that the aluminum ion has the strongest interactions with the six closest water molecules (the so-called first solvation shell), even though it does interact with the other water molecules surrounding this \(\ce{Al(H2O)6^3+}\) cluster as well: \[\ce{Al(NO3)3}(s)+\ce{6H2O}(l)\ce{Al(H2O)6^3+}(aq)+\ce{3NO3-}(aq) \nonumber \]. CN-Weak base. The combination is hypergolic, igniting on contact between fuel and oxidizer. . \(\ce{Al(H2O)6^3+}(aq)+\ce{H2O}(l)\ce{H3O+}(aq)+\ce{Al(H2O)5(OH)^2+}(aq) \hspace{20px} K_\ce{a}=1.410^{5}\). Polar "In chemistry, polarity i An acid is a molecule or ion capable of donating a, In chemistry, bases are substances that, in aqueous solution, are slippery to the touch, taste astringent, change the color of. In the following acid-base reaction, how would you identify the acid, base, and their conjugate acids and bases: NH4+ + HCO3- --> NH3 + H2CO3? Answer = IF4- isNonpolar What is polarand non-polar? By expressing your answer in a chemical formula you are defining the composition a class of (The value . Justify your answers. This reason can also be considered for explaining why the aqueous solution of potassium bromide (KBr) is neutral with no acidic or alkaline properties. Is a solution with OH- = 2.2 x 10-2 M acidic, basic, or neutral? The problem says to write the dissociation equation for C6H5NH3+ including water as a reactant. If Ka > Kb, the solution is acidic, and if Kb > Ka, the solution is basic. Water is a weak base, but it is a base, so it can . PDF Name: D epart mnt of Che istry U niversity of Texas at A ustin Is a solution with H+ = 1.4 x 10-11 M acidic, basic, or neutral? C6H5NH3+, as the acid, is a proton donor. The pyramidalization angle between the CN bond and the bisector of the HNH angle is 142.5. Is a solution with OH- = 0.00070 M acidic, basic, or neutral? Is a solution with OH- = 1.53 x 10-7 M acidic, basic, or neutral? How do you find conjugate base concentration? Potassium permanganate in neutral solution oxidizes it to nitrobenzene; in alkaline solution to azobenzene, ammonia, and oxalic acid; in acid solution to aniline black. For example, sodium acetate, NaCH3CO2, is a salt formed by the reaction of the weak acid acetic acid with the strong base sodium hydroxide: \[\ce{CH3CO2H}(aq)+\ce{NaOH}(aq)\ce{NaCH3CO2}(aq)+\ce{H2O}(aq) \nonumber \]. ), Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams, Work, Gibbs Free Energy, Cell (Redox) Potentials, Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH), Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust, Kinetics vs. Thermodynamics Controlling a Reaction, Method of Initial Rates (To Determine n and k), Arrhenius Equation, Activation Energies, Catalysts, Chem 14B Uploaded Files (Worksheets, etc. Aniline, a weak base, reacts with water according to the reaction. [7], Aniline was first isolated in 1826 by Otto Unverdorben by destructive distillation of indigo. But be aware: we don't reference organic compounds by their molec. acid base - What are the products of the dissociation of sodium Is an aqueous solution with H+ = 8.00 x 10-4 M acidic, basic, or neutral? It reacts with nitrobenzene to produce phenazine in the Wohl-Aue reaction. The hydroxide ions generated in this equilibrium then go on to react with the hydronium ions from the stomach acid, so that : This reaction does not produce carbon dioxide, but magnesium-containing antacids can have a laxative effect. Answer link. 4. Hydrogenation gives cyclohexylamine. Kim Tran 1J Posts: 62 Joined: Fri Sep 28, 2018 7:24 am. NaOH is a strong base, which means that . [34], Some early American rockets, such as the Aerobee and WAC Corporal, used a mixture of aniline and furfuryl alcohol as a fuel, with nitric acid as an oxidizer. Answer = if4+ isPolar What is polarand non-polar? C6H5NH3+, conjugate base is a weak base, therefore it is potentially acidic NO2-, conjugate acid is a weak acid, therefore the salt is also potentially basic However, since the Ka > Kb, the solution must be acidic So it has both nature acidic on basic in its constituent, it will act as a neutral soul. Because not all the molecules of it react with water ions and produce OH - ions, most of them stay together, only, a few molecules do interact with water, Therefore, the amount of OH - ions produced in an aqueous solution . In this case, water would act as a base in which it would accept a proton from C6H5NH3+ to form the hydronium ion H3O+. For Review - studyres.com For example: 7*x^2. Would an aqueous solution with H+ = 1.6 x 10-8 M be acidic, basic, or neutral? Correct answers: 3 question: Aniline hydrochloride, (C6H5NH3)Cl, is a weak acid. What is the conjugate acid-base relationship of (H2PO4)- and (HPO4)-? Why does a strong acid have a weak conjugate base, whereas a weak acid has a relatively strong conjugate base? What is the #"conjugate acid of ammonia"#, #NH_3#? Is an aqueous solution with H+ = 1.08 x 10-6 M acidic, basic, or neutral? New Questions About Fantasy Football Symbols Answered and Why You Must Read Every Word of This Report. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. Let us take the example of bicarbonate ions reacting with water to create carbonic acid and hydronium ions. Top. CH_3COONa. Is a solution with H+ = 6.6 x 10-6 M acidic, basic, or neutral? "Beschreibung einiger neuer organischer Basen, dargestellt durch die Einwirkung des Schwefelwasserstoffes auf Verbindungen der Kohlenwasserstoffe mit Untersalpetersure" (Description of some new organic bases, produced by the action of hydrogen sulfide on compounds of hydrocarbons and hyponitric acid [H. Wilcox RW, "The treatment of influenza in adults", Krahl-Urban, B., Papke, H.E., Peters, K. (1988), Last edited on 12 February 2023, at 16:29, National Institute for Occupational Safety and Health, "aniline | Etymology, origin and meaning of aniline by etymonline", "Electron conjugation versus - repulsion in substituted benzenes: why the carbon-nitrogen bond in nitrobenzene is longer than in aniline", "On the Harmonic Oscillator Model of Electron Delocalization (HOMED) Index and its Application to Heteroatomic -Electron Systems", http://dx.doi.org/10.1016/j.theochem.2007.02.016, "Aniline synthesis by amination (Arylation)", "Ueber das Verhalten der organischen Krper in hheren Temperaturen", "Ueber das Anilin, ein neues Zersetzungsproduct des Indigo", "Beschreibung einiger neuer organischer Basen, dargestellt durch die Einwirkung des Schwefelwasserstoffes auf Verbindungen der Kohlenwasserstoffe mit Untersalpetersure", "Bemerkung zu vorstehender Abhandlung des Hrn. \[\ce{C6H5NH3+}(aq)+\ce{H2O}(l)\ce{H3O+}(aq)+\ce{C6H5NH2}(aq) \nonumber \]. PDF Acids and Bases Is the salt C5H5NHBr acidic, basic, or neutral? How do you know? Explain. Is a 1.0 M KBr solution acidic, basic, or neutral? In this case, C5H5N accepts a hydrogen ion, becoming a conjugate acid and the species left over is OH-, making it the conjugate base. Is a solution with OH- = 1 x 10-6 M acidic, basic, or neutral? Why does a stronger acid have a weaker conjugate base? A solution has OH- = 1.3 x 10-2 M. Is this solution acidic, basic, or neutral? (a) The acid and base must encounter each other by a collision in order for the proton to transfer. The pH of the solution 8.82. (b) All collisions between acids and bases result in proton transfer. Jimmy aaja, jimmy aaja. The beneficial bacteria feed on starches in the cucumber and produce lactic acid as a waste product in a process called fermentation. Substituting the expressions for the equilibrium concentrations into the equation for the ionization constant yields: \(=\dfrac{(x)(x)}{0.10x}=1.4 \times 10^{5}\), \[\ce{[H3O+]}=0+x=1.210^{3}\:M \nonumber \], \[\mathrm{pH=log[H_3O^+]=2.92(an\: acidic\: solution)} \nonumber \]. Is a solution with OH- = 8.8 x 10-2 M acidic, basic, or neutral? Explain. The following four situations illustrate how solutions with various pH values can arise following a neutralization reaction using stoichiometrically equivalent quantities: Our stomachs contain a solution of roughly 0.03 M HCl, which helps us digest the food we eat. The conjugate base of an acid remains after the acid has donated what? HS- . 3. Chloride is a very weak base and will not accept a proton to a measurable extent. Suppose a solution has (H3O+) = 1 x 10-9 M and (OH-) = 1 x 10-5 M. Is the solution acidic, basic, or neutral? What is the conjugate for benzoic acid, (HC7H5O2)? Is a solution with H3O+ = 0.000571 M acidic, basic, or neutral? Explain. Students also viewed . Organic bases are classified as bases because they act as proton acceptors and react with acids to form salts. What is are the functions of diverse organisms? Salt of a Weak Base and a Strong Acid. Explain. C6H5NH3+ Weak acid. Explain. The molecule shown is anilinium fluoride. Is a solution with OH- = 8.74 x 10-11 M acidic, basic, or neutral? In this example, sulfuric acid (#H_2SO_4#) is an acid because it "donates" #H^+# to the water. Expert Answer. Is a solution with H3O+ = 9.35 x 10-9 M acidic, basic, or neutral? Explain how you know. The acid loses one proton (H+), donates it the H2O (making it H3O+ in the products side of the reaction as shown above) and the charge is neutralized as a result. Which conjugate base (#HCOO^-# or #CN^-#) is stronger? Identify the Bronsted-Lowry acid and base in the reaction #"NH"_4^(+)(aq) + "H"_2"O"(l) -> "NH"_3(aq) + "H"_3"O"^(+)(aq)#? KClO2,FeCl2,CaBr2,CH3NH3Br,C6H5NH3NO2 and can you explain why. To generate the mono-substituted product, a protection with acetyl chloride is required: The reaction to form 4-bromoaniline is to protect the amine with acetyl chloride, then hydrolyse back to reform aniline. Me molesta que mis padres no ______ (cuidar) su alimentacin.. 3. base + acid Conj A + Conj B. 5 Answers There is no word like addressal. PDF Preparation for Buffer Problems Supplemental Worksheet KEY Review of Why do people say that forever is not altogether real in love and relationship. Determine whether the following salt solution is acidic, basic, or neutral: Sr(ClO_4)_2. Explain. Explain. For example, ammonium chloride, NH4Cl, is a salt formed by the reaction of the weak base ammonia with the strong acid HCl: \[\ce{NH3}(aq)+\ce{HCl}(aq)\ce{NH4Cl}(aq) \nonumber \]. This means that an aqueous solution of such a compound will have the dissociated ions participate in acid-base (proton transfer) reactions with water molecules. At the time of mauveine's discovery, aniline was expensive. For example, acetic acid, like most weak acids, ionizes, 5%. Zinin", "Organische Salzbasen, aus Nitronaphtalose und Nitrobenzid mittelst Schwefelwasserstoff entstehend", "Chemische Untersuchung der organischen Basen im Steinkohlen-Theerl", "De l'action des protosels de fer sur la nitronaphtaline et la nitrobenzine. What are the conjugate acid and base of #NH_3#? For a given strong acid #HA#, is the concentration of #A^-# likely to be high or low at equilibrium? Because an early source of the benzene from which they are derived was coal tar, aniline dyes are also called coal tar dyes. Answer = C2Cl2 is Polar What is polarand non-polar? The base which a certain acid turns into.Every acid had a conjugate base:HX (acid) X- (conjugate base)The acid is also called the base's conjugate acid. ClO 4 -Perchlorate ion. Find the area of the region. What is the formula of the conjugate base of What is the conjugate acid for H2O (water)? Possibilities: Conjugate Acid: C6H5NH3+ | Conjugate Base: C6H5NH Conjugate Acid: C6H5NH3 | Conjugate Base: C6H5NH Conjugate Acid: C6H5N2 | Conjugate Base: C6H5NH2 Conjugate Acid . Aniline is a weak base. [11], The amine in anilines is a slightly pyramidalized molecule, with hybridization of the nitrogen somewhere between sp3 and sp2. Is a solution with H3O+ = 1.7 x 10-8 M acidic, basic, or neutral? A solution is neutral when it contains equal concentrations of hydronium and hydroxide ions. ________________is the period of development from Organic Bases: Organic bases are compounds that contain nitrogen atoms with lone pair electrons that can accept a hydrogen ion (H+) and form a covalent bond. Chemistry - A-Level Science - Marked by Teachers.com Is an aqueous solution with H+ = 6.9 x 10-4 M acidic, basic, or neutral? 1. However, the acetate ion, the conjugate base of acetic acid, reacts with water and increases the concentration of hydroxide ion: \[\ce{CH3CO2-}(aq)+\ce{H2O}(l)\ce{CH3CO2H}(aq)+\ce{OH-}(aq) \nonumber \]. Is a solution with OH- = 1.6 x 10-3 M acidic, basic, or neutral? It turns out that fish have volatile amines (bases) in their systems, which are neutralized by the acids to yield involatile ammonium salts. Explain. Calculate the pH of a 0.10-M solution of aluminum chloride, which dissolves completely to give the hydrated aluminum ion \(\ce{[Al(H2O)6]^3+}\) in solution. They only report ionization constants for acids. Salvarsan's targeted microorganism, not yet recognized as a bacterium, was still thought to be a parasite, and medical bacteriologists, believing that bacteria were not susceptible to the chemotherapeutic approach, overlooked Alexander Fleming's report in 1928 on the effects of penicillin. Conjugate acid is H2SO4 What are the #"conjugate acids"# of #HO^-#, #HCO_3^(-)#, #HPO_4^(2-)#, and #CO_3^(2-)# ions? Question = Is IF4-polar or nonpolar ? The acetate ion behaves as a base in this reaction; hydroxide ions are a product. This causes a disturbance to the equilibrium, and causes a response predicted by the Le Chatelier Principle - more of the acid molecules dissociate to increase the concentration of H + ions back to near the original concentration. NO2-, conjugate acid is a weak acid, therefore the salt is also potentially basic. HS? This means that an aqueous solution of such a compound will have the dissociated ions participate in acid-base (proton transfer) reactions with water molecules. Explain. ph Do my homework now. a)NaNO2 b)HCl c)NaF d)Zn(H2O)3(OH)(NO3) Here's what I have so far: a) NaNO2 --> Na+ + . Is a solution with H3O+ = 4.21 x 10-6 M acidic, basic, or neutral?

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