Chapter 14, Problem 18QRT

(a)

Interpretation Introduction

Interpretation:

In the reactants, acid and base has to be identified and also in the product, conjugate acid and conjugate base has to be identified in the given reaction.

    ${\text{CN}}^{-}(aq)+{\text{CH}}_{\text{3}}\text{COOH}(aq)\to {\text{CH}}_{\text{3}}{\text{COO}}^{-}(aq)+\text{HCN}(aq)$

Concept Introduction:

Brønsted-Lowry acid is the one which can donate ${\text{H}}^{\text{+}}$ ion to other substances.  It can also be said as proton donors.  Brønsted-Lowry base is the one which can accept ${\text{H}}^{\text{+}}$ ion from other substances.  It can also be said as proton acceptors.  In order to be a Brønsted-Lowry base, an unshared pair of electrons must be present on molecule or the ion.

When an acid donates a proton, the species formed from acid is known as conjugate base.  When a base accepts a proton from acid, the species formed from the base is known as conjugate acid.

(b)

Interpretation Introduction

Interpretation:

In the reactants, acid and base has to be identified and also in the product, conjugate acid and conjugate base has to be identified in the given reaction.

    ${\text{O}}^{2-}(aq)+{\text{H}}_{\text{2}}\text{O}(l)\to {\text{2OH}}^{-}(aq)$

Concept Introduction:

Refer part (a).

(c)

Interpretation Introduction

Interpretation:

In the reactants, acid and base has to be identified and also in the product, conjugate acid and conjugate base has to be identified in the given reaction.

    ${\text{HCO}}_{\text{2}}{}^{-}(aq)+{\text{H}}_{\text{2}}\text{O}(l)\to \text{HCOOH}(aq)+{\text{OH}}^{-}(aq)$

Concept Introduction:

Refer part (a).