Chapter 17, Problem 3QAP

Interpretation Introduction

(a)

Interpretation:

Balance the following reaction in base:

$\text{Ag}\left(\text{s}\right){\text{ + NO}}_{\text{3}}{}^{\text{-}}\left(\text{aq}\right)\to {\text{Ag}}^{\text{+}}\left(\text{aq}\right)\text{ + NO}\left(\text{g}\right)$

Concept introduction:

Here are the rules to balance redox reactions in basic medium:

1. Determine the oxidation numbers of the elements and write the oxidation and reduction half equation.
2. Balance the atoms of elements other than O and H. Use H₂ O to balance O, H+ to balance H, electrons to balance the charges. Equalize the number of electrons on both the half reactions and then add the half reactions.
3. Add OH- to neutralize the excess protons since this is a basic medium. Add OH- to both side of the equation to balance it.

Interpretation Introduction

(b)

Interpretation:

Balance the following reaction in base: ${\text{CO}}_{\text{2}}\left(\text{g}\right){\text{ + H}}_{\text{2}}\text{O}\left(\text{l}\right)\to {\text{C}}_{\text{2}}{\text{H}}_{\text{4}}\left(\text{g}\right){\text{ + O}}_{\text{2}}\left(\text{g}\right)$

Concept introduction:

Here are the rules to balance redox reactions in basic medium:

1. Determine the oxidation numbers of the elements and write the oxidation and reduction half equation.
2. Balance the atoms of elements other than O and H. Use H₂ O to balance O, H+ to balance H, electrons to balance the charges. Equalize the number of electrons on both the half reactions and then add the half reactions.
3. Add OH- to neutralize the excess protons since this is a basic medium. Add OH- to both side of the equation to balance it.