Concept explainers
Water containing
Interpretation: The molar solubility of
Concept introduction:
When a compound that contains an ion that is common with a dissolved substance is added to a solution at equilibrium, the equilibrium shifts to the left. This is known as the common ion effect.
Molar solubility is defined as the moles of solute dissolved in one liter of solution, and its unit is
At a given temperature, the product of molar concentrations of the ions of salt present in the solution is known as the solubility product of the salt. It is represented by
Higher is the value of solubility product of a salt, more is its solubility.
The presence of common ions in the solution decreases the solubility of a given compound.
For a general reaction:
The solubility product can be calculated by the expression as:
Here,
The expression of
The relation between
Answer to Problem 96AP
Solution:
(a)
(b)It is fairly soluble.
(c)12.40
(d)
(e)
Explanation of Solution
a)The molar solubility of
This problem is based on the common ion effect.
Consider the dissociation of
Let
Consider the dissociation of
According to the above dissociation reaction, the expression for
The solubility product constant of
Substitute
Since the value of
As the addition of washing soda to permanent hard water is done, most of the
Therefore, the molar solubility of
b)
The solubility product constant of
c) The
The solubility product constant of
Let
So, according to the above reaction, the expression for
Substitute
Now, the concentration of
Calculate the
Substitute
The relation between
Substitute 1.60 for
Therefore, the
d)The concentration of
From the previous part of the question, the concentration of
According to the above reaction, the expression for
The calculated concentration of
Substitute
Therefore, the concentration of
e) The i on
Out of
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Chapter 17 Solutions
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- General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning