H2SO3 + H2OHSO3 + H3O+ Ka = 1.2 x 10-2 Reaction 2 By referring to the Ka values for the above reactions, state which is the stronger acid, carbonic acid or sulfurous acid. Explain your answer.

The following are representations of acidbase reactions: a. Label each of the species in both equations as an acid or a base and explain your answers. b. For those species that are acids, which labels apply: Arrhenius acid, BrnstedLowry acid, Lewis acid? What about the bases?

In each of the following acid-base reactions, identify the Brnsted acid and base on the left and their conjugate partners on the right. (a) C2H5N(aq) + CH3CO2H(aq) C5H5NH+(aq) + CH3CO2(aq) (b) N2H4(aq) + HSO4(aq) N2H5+(aq) + SO42(aq) (c) [Al(H2O)6]3+ (aq) + OH(aq) [Al(H2O)5OH]2+ (aq) + H2O+()

Oxaloacetic acid, which is produced in metabolic reactions, has the structure Would you predict that this acid is a mono-, di-, tri-, or tetraprotic acid? Give your reasoning.

Write balanced molecular equations to illustrate the following characteristic reactions of acids, using nitric acid (HNO3). a. Reaction with water to form hydronium ions b. Reaction with the solid oxide CaO c. Reaction with the solid hydroxide Mg(OH)2 d. Reaction with the solid carbonate CuCO3 e. Reaction with the solid bicarbonate KHCO3 f. Reaction with Mg metal

In the following net ionic reaction, identify each species as either a Brnsted-Lowry acid or a Brnsted -Lowry base: CH3COO(aq)+HS(aq)CH3COOH(aq)+S2(aq). Identify the conjugate of each reactant and state whether it is a conjugate acid or a conjugate base.

Write balanced molecular equations to illustrate the following characteristic reactions of acids, using sulfuric acid (H2SO4). a. Reaction with water to form hydronium ions b. Reaction with the solid oxide CaO c. Reaction with the solid hydroxide Mg(OH)2 d. Reaction with the solid carbonate CuCO3 e. Reaction with the solid bicarbonate KHCO3 f. Reaction with Mg metal

Arsenic acid (H3AsO4) is a moderately weak triprotic acid. Write equations showing its stepwise dissociation. Which of the three anions formed in these reactions will be the strongest Brnsted base? Which will be the weakest Brnsted base? Explain your answers.

Hydrazine, N2H4 (having the structure H2NNH2), and its derivatives have been used as rocket fuels. Draw the Lewis electron-dot formula for the hydrazine molecule. Describe the geometries expected about the nitrogen atoms in this molecule. Why would you expect hydrazine to be basic? Which substance, NH3 or N2H4, would you expect to be more basic? Why? Write the chemical equation in which hydrazine reacts with hydrochloric acids to form the salt N2H5Cl. Consider the positive ion of this salt. How does its basic character compare with that of NH3 and N2H4? Explain.

Are solutions of the following salts acidic, basic, or neutral? For those that are not neutral, write balanced chemical equations for the reactions causing the solution to be acidic or basic. The relevant Ka and Kb values are found in Tables 13-2 and 13-3. a. NaNO3 b. NaNO2 c. C5H5NHClO4 d. NH4NO2 e. KOCl f. NH4OCl