Chapter 5, Problem 42E

Interpretation Introduction

(a)

Interpretation:

The given disproportionation reactions should be balanced.

${\mathrm{MnO}}_4^{2-}\to Mn{O}_2(s)+Mn{O}_4^{-}\text{ (basic solution)}$

Concept introduction:

The disproportionation reaction is one type of redox reaction in which substance undergoes both oxidation and reduction simultaneously.

To balance the disproportionation reaction, first, write the half-equations for oxidation and reduction half reactions then balance it by using the same procedure like as half reaction method.

Interpretation Introduction

(b)

Interpretation:

The given disproportionation reactions should be balanced.

${\text{P}}_{\text{4}}\text{(s)}\to {\text{H}}_{\text{2}}{\text{PO}}_{\text{2}}^{\text{-}}{\text{+PH}}_{\text{3}}\text{(g) (basic solution)}$

Concept introduction:

The disproportionation reaction is one type of redox reaction in which substance undergoes both oxidation and reduction simultaneously.

To balance the disproportionation reaction, first we need to write the half-equations for oxidation and reduction half reactions then balance it by using the same procedure like as half reaction method.

Interpretation Introduction

(c)

Interpretation:

The given disproportionation reactions should be balanced.

${\mathrm{S}}_8(s)\to S^{2-}+S_2{O}_3^{2-}\text{ (basic solution)}$

Concept introduction:

The disproportionation reaction is one type of redox reaction in which substance undergoes both oxidation and reduction simultaneously.

To balance the disproportionation reaction, first we need to write the half-equations for oxidation and reduction half reactions then balance it by using the same procedure like as half reaction method.

Interpretation Introduction

(d)

Interpretation:

The given disproportionation reactions should be balanced.

${\text{As}}_{\text{2}}{\text{S}}_{\text{3}}{\text{+H}}_{\text{2}}{\text{O}}_{\text{2}}\to {\text{AsO}}_{\text{4}}^{\text{3-}}{\text{+SO}}_{\text{4}}^{\text{2-}}$

Concept introduction:

The disproportionation reaction is one type of redox reaction in which substance undergoes both oxidation and reduction simultaneously.

To balance the disproportionation reaction, first we need to write the half-equations for oxidation and reduction half reactions then balance it by using the same procedure like as half reaction method.