Chapter 7, Problem 7CP

(a)

Interpretation Introduction

Interpretation:

The substance that is blue in color in the given reaction has to be identified.

    ${\text{Co(H}}_{\text{2}}{\text{O)}}_{\text{6}}{{}^{\text{2}}}^{+}(aq)+4{\text{Cl}}^{-}(aq)\rightleftharpoons {\text{CoCl}}_{\text{4}}{}^{\text{2-}}(aq)+{\text{6H}}_{\text{2}}\text{O}(l)$

(b)

Interpretation Introduction

Interpretation:

The substance that is pink in color in the given reaction has to be identified.

    ${\text{Co(H}}_{\text{2}}{\text{O)}}_{\text{6}}{{}^{\text{2}}}^{+}(aq)+4{\text{Cl}}^{-}(aq)\rightleftharpoons {\text{CoCl}}_{\text{4}}{}^{\text{2-}}(aq)+{\text{6H}}_{\text{2}}\text{O}(l)$

(c)

Interpretation Introduction

Interpretation:

Way in which LeChatelier’s principle is applied in the given reaction has to be explained.

    ${\text{Co(H}}_{\text{2}}{\text{O)}}_{\text{6}}{{}^{\text{2}}}^{+}(aq)+4{\text{Cl}}^{-}(aq)\rightleftharpoons {\text{CoCl}}_{\text{4}}{}^{\text{2-}}(aq)+{\text{6H}}_{\text{2}}\text{O}(l)$