Chapter 16, Problem 23RQ

Interpretation Introduction

Interpretation:

Reason for formation of precipitate of $\text{NaCl}$ when $\text{HCl}$ gas is passed into a saturated $\text{NaCl}$ has to be determined.

Concept Introduction:

Addition of similar type of ion in partially soluble salt is termed as common ion effect. The common ion present in it decides the shift of equilibrium according to Le Chatelier’s principle. According to this principle with increase in concentration of reactants reaction moves towards forward direction thus this increases concentration of products. Whereas with increase in concentration of product reaction shifts towards reverse direction. This increases the concentration of reactants.