
Concept explainers
Practice ProblemBUILD
Determine the pH of a solution at

Interpretation:
The pH of the solution for each of the given concentrations of hydroxide ions is to be determined.
Concept introduction:
pH is a measure of the acidity of a solution, which depends on the concentration of hydronium ions and the temperature of the solution.
Use the equilibrium expression
Rearrange the above equation for hydronium ions as:
The formula to calculate the pH of a solution is:
Answer to Problem 1PPB
Solution:
a)
b)
c)
Explanation of Solution
Use the equilibrium expression
Rearrange the above equation for hydronium ions as:
Use equation (1) to calculate the concentration of
Now, substitute the value of
Use the equilibrium expression
Rearrange the above equation for hydronium ions as:
Use equation (1) to calculate the concentration of
Now, substitute the value of
The pH of the solution is
Use the equilibrium expression
Rearrange the above equation for hydronium ions as:
Use equation (1) to calculate the concentration of
Now, substitute the value of
The pH of the solution is
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