Chapter 19, Problem 90QRT

(a)

Interpretation Introduction

Interpretation:

Element that is oxidized and that is reduced has to be identified in the given reaction.

    ${\text{3NH}}_{\text{4}}{\text{ClO}}_{\text{4}}(s)+\text{3Al}(s)\to {\text{Al}}_{\text{2}}{\text{O}}_{\text{3}}(s)+AlC{l}_3(s)+6{\text{H}}_{\text{2}}\text{O}(g)+3NO(g)$

(b)

Interpretation Introduction

Interpretation:

Enthalpy change for the given reaction has to be calculated.

    ${\text{3NH}}_{\text{4}}{\text{ClO}}_{\text{4}}(s)+\text{3Al}(s)\to {\text{Al}}_{\text{2}}{\text{O}}_{\text{3}}(s)+AlC{l}_3(s)+6{\text{H}}_{\text{2}}\text{O}(g)+3NO(g)$