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Chapter 10: Q.10.104 (page 360)

Identify the conjugate acid-base pairs in each of the following equations:

a.HNO2(aq)+HS鈭�(aq)鈬�NO2鈭�(aq)+H2S(g)

b.HCl(aq)+OH鈭�(aq)鉄�Cl鈭�(aq)+H2O(l)

Short Answer

Expert verified

Part (a) . HS鈭�(aq)鈫�H2S(aq)and HCl(aq)鈫�Cl鈭�(aq)

Part (b) . H2O(l)鈫�OH鈭�(aq)and HNO2(aq)鈫�NO2鈭�(aq)

Step by step solution

01

Given Information (Part a)

In the Br酶nsted-Lowry meaning of acids and bases, a conjugate acid-base pair comprises two substances that vary exclusively by the presence of a proton. A conjugate acid is framed when a proton is added to a base, and a conjugate base is shaped when a proton is eliminated from an acid.

02

Explanation Part (a)

A conjugate acid is framed when a proton is added to a base, and a conjugate base is shaped when a proton is eliminated from an acid.

Hence,

the conjugate acid-base pairs are,

HS鈭�(aq)鈫�H2S(aq)andHCl(aq)鈫�Cl鈭�(aq)

03

Explanation Part (b)

A conjugate acid is framed when a proton is added to a base, and a conjugate base is shaped when a proton is eliminated from an acid.

Hence,

the conjugate acid-base pairs are,

H2O(l)鈫�OH鈭�(aq)andHNO2(aq)鈫�NO2鈭�(aq)

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Most popular questions from this chapter

Which of the following are not at equilibrium?

a. The rates of the forward and reverse reactions are equal.

b. The rate of the forward reaction does not change.

c. The concentrations of reactants and the products are not constant.

In the blood plasma. pH is maintained by the carbonic acid bicarbonate buffer system, (10,8)

a. How is pH maintained when acid is added to the buffer system?

b. How is pH maintained when base is added to the buffer system?

Which of the following represents a buffer system? Explain.

a. NaOHandNaCl

b. H2CO3andNaHCO3

c. HFandKF

d. KClandNaCl

Determine the pH for the follow ing solutions:(10,6)

a.[OH]=1.0脳10-7M

b.H2O'=4.2脳10-3M

c.H2O+=0.0001M

d.[OH]=8.5脳10-9M

Calculate the pH of each solution given the follow in:

a. H2O+=1脳104M

b. H,O+=3脳10-9M

c.[OH]=1脳10-9M

d. 鈱�OH鈱�=2.5脳10-11M

e.H,O'=6.7脳10-1M

f. OH-=8.2脳10-4M
See all solutions

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