Chapter 15, Problem 68E

Interpretation Introduction

Interpretation: The combination reaction of ${\text{Ni}}^{\text{2}+}$ and ${\text{NH}}_{\text{3}}$, the overall formation constant of $\text{Ni}{\left({\text{NH}}_{\text{3}}\right)}_{\text{6}}{}^{\text{2}+}$, number of moles of $\text{Ni}{\left({\text{NH}}_{\text{3}}\right)}_{\text{6}}{\text{Cl}}_{\text{2}}$, volume and concentration of ${\text{NH}}_{\text{3}}$ is given. The concentration of $\text{Ni}{\left({\text{NH}}_{\text{3}}\right)}_{\text{6}}{}^{\text{2}+}$ and ${\text{Ni}}^{\text{2}+}$ is to be calculated.

Concept introduction: At equilibrium, the equilibrium constant expression is expressed by the formula,

$K=\frac{\text{Concentration}\text{of}\text{products}}{\text{Concentration}\text{of}\text{reactants}}$