
Concept explainers
Interpretation:
The amount of calcium oxalate that dissolves in
Concept introduction:
Solubility product is the product of concentrations of ions raised to the power of their

Answer to Problem 67E
The amount of calcium oxalate that will dissolve in
Explanation of Solution
The equilibrium equation for calcium oxalate is shown below.
The solubility product constant for calcium oxalate is calculated by the formula shown below.
Where,
•
•
The given value of
The equilibrium equation for sodium oxalate is shown below.
In the above reaction, the concentration of
Substitute the values of
The concentration of
According to the equilibrium equation for calcium oxalate shown above, the concentration of
The molar mass of
The volume of the solution is
The conversion of
So, the conversion of
The volume of the solution is
The number of moles of solute is calculated as shown below.
The molarity of the solution is calculated as shown below.
Substitute equation (2) in equation (3) as shown below.
Substitute the values of molarity, molar mass and volume of solution in above equation as shown below.
Therefore, the mass of the solute is calculated as shown below.
The amount of calcium oxalate required is
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Chapter 18 Solutions
Introductory Chemistry: An Active Learning Approach
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