Chapter 23, Problem 87SAE

Interpretation Introduction

(a)

Interpretation:

The redox reaction given below needs to be balanced.

${\text{Fe}}_{\text{2}}{\text{S}}_{\text{3}}{\text{ + H}}_{\text{2}}{\text{O + O}}_{\text{2}}\to {\text{Fe(OH)}}_{\text{3}}\text{ + S}$

Concept introduction:

Redox reactions are chemical reactions that are expressed in terms of reduction and oxidation half reactions. They involve transfer of electrons between two species Oxidation reaction involves loss of electrons by one of the reactants whereas reduction is accompanied by gain of electrons by the other reactant.

Interpretation Introduction

(b)

Interpretation:

The redox reaction given needs to be balanced

${\text{Mn}}^{\text{2+}}{\text{ + S}}_{\text{2}}{\text{O}}_8^{2-}{\text{ + H}}_{\text{2}}\text{O}\to {\text{ MnO}}_4^{-}{\text{ + SO}}_4^{2-}{\text{ + H}}^{\text{+}}$

Concept introduction:

Redox reactions are chemical reactions that are expressed in terms of reduction and oxidation half reactions. They involve transfer of electrons between two species Oxidation reaction involves loss of electrons by one of the reactants whereas reduction is accompanied by gain of electrons by the other reactant.

Interpretation Introduction

(c)

Interpretation:

The redox reaction given below needs to be balanced

${\text{Ag + CN}}^{-}{\text{ + O}}_{\text{2}}{\text{ + OH}}^{-}\to {\text{ [Ag(CN)}}_2{\text{]}}^{-}{\text{ + H}}_{\text{2}}\text{O}$

Concept introduction:

Redox reactions are chemical reactions that are expressed in terms of reduction and oxidation half reactions. They involve transfer of electrons between two species Oxidation reaction involves loss of electrons by one of the reactants whereas reduction is accompanied by gain of electrons by the other reactant.