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Ammonia appears in Table 2-2 as both an acid and a conjugate base. (a) Explain how

Chapter 2, Problem PROBLEM 2-9

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QUESTION:

Ammonia appears in Table 2-2 as both an acid and a conjugate base.

(a) Explain how ammonia can act as both an acid and a base. Which of these roles does it commonly fill in aqueous solutions?

(b) Show how water can serve as both an acid and a base.

(c) Calculate \(K_a\) and \(pK_a\) for the hydronium ion, \(H_3O^+\).

(d) Show how methanol (\(CH_3OH\)) can serve as both an acid and a base. Write an equation for the reaction of methanol with sulfuric acid.

Questions & Answers

QUESTION:

Ammonia appears in Table 2-2 as both an acid and a conjugate base.

(a) Explain how ammonia can act as both an acid and a base. Which of these roles does it commonly fill in aqueous solutions?

(b) Show how water can serve as both an acid and a base.

(c) Calculate \(K_a\) and \(pK_a\) for the hydronium ion, \(H_3O^+\).

(d) Show how methanol (\(CH_3OH\)) can serve as both an acid and a base. Write an equation for the reaction of methanol with sulfuric acid.

ANSWER:

Problem 2-9

Ammonia appears in Table 2-2 as both an acid and a conjugate base. (a) Explain how ammonia can act as both an acid and a base. Which of these roles does it commonly fill in aqueous solutions? (b) Show how water can serve as both an acid and a base. (c) Calculate Ka and pKa for the hydronium ion, H3O+. (d) Show how methanol (CH3OH) can serve as both an acid and a base. Write an equation for the reaction of methanol with sulfuric acid.

                                                              Step by step solution

Step 1 of 4

a)

By accepting proton ammonia acts as a base and acts as an acid by donating the proton.

                                     

                                                                    Conjugate acid

                                 

                                                               Conjugate base

Ammonia concepts a proton from water in an aqueous solution and forms an ammonium ion.

Therefore, ammonia acts as a base in aqueous solution.

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