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Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

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BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097
Textbook Problem

Under what circumstances can you compare the relative solubilities of two salts directly by comparing the values of their solubility products? When can relative solubilities not be compared based on Ksp values?

Interpretation Introduction

Interpretation:

The circumstance under which the relative solubilities of the two salts can be directly compared by comparing the values of their solubility product is to be stated. The condition when a relative solubility cannot be compared based on Ksp values is to be stated.

Concept introduction:

The solubility is defined as the maximum amount of solute that can dissolve at a certain amount of solvent at certain temperature. The solubility product Ksp is an equilibrium product that is applied when salt partially dissolve in a solvent.

Explanation

Explanation

To determine:

The circumstance under which the relative solubilities of the two salts can be directly compared by comparing the values of their solubility product; the condition when a relative solubility cannot be compared based on Ksp values.

The relative solubility of the two salts is directly compared by the values of their solubility product when these salts contain the same number of cations and anions.

The relative solubility of two salts is directly compared by the values of their solubility product when these salts contain the same number of cations and anions.

For example,

MX(s)M+(aq)+X(aq)

Where,

  • MX is a binary compound.
  • M+ is cation.
  • X is anion.

The Ksp value for above equation is,

  • Ksp=[M+][X]

The molar solubility of above equation is,

X2=Ksp

Where,

  • X is molar solubility.

This molar solubility is same for all MX compounds such as AgCl,AgBr,AgI

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