Chapter 15, Problem 9RQ

Interpretation Introduction

Interpretation: The reason of non-formation of precipitate when $5\text{M}$ ammonia is added to the solution of $\text{Cu}{\left(\text{OH}\right)}_2$ but there occurs formation of precipitate of $\text{Cu}{\left(\text{OH}\right)}_2$ when $5\text{M}$ ${\text{HNO}}_3$ is added and the effect of ability of a cation to form a complex ion over the solubility of complex ion is to be stated.

Concept introduction: The formation of precipitate occurs when there occurs the reaction between the cations and anions present in the solution. It is determined by using the rules of solubility of ionic compounds.