Chapter 18, Problem 106SAE

Interpretation Introduction

Interpretation:

It should be determined whetherformation of a complex ion in an ion solution of Hg²⁺, I^-, Ag+ and NO₂- increase or decrease the amount of precipitate.

Concept introduction:

Non-common Ion Effect: - The effect of “noncommon” or diverse ions is not as striking as the common-ion effect. Moreover, diverse ions tend to increase rather than decrease solubility. As the total ionic concentration of a solution increases, interionic attractions become more important. Activities become smaller than the stoichiometric concentration. For the ions involved in the solution process, this means that higher concentrations must appear in solution before equilibrium is established—the solubility increases.