Concept explainers
Calculate the pH of a solution that is 1.00 M
Interpretation:
The pH of a solution that contains
Concept introduction:
pH is the measure of the acidity of a solution thatdepends on the concentration of hydronium ions and temperature of the solution.
The formula to calculate the pH of the solution from the concentration of hydronium ions is:
The ionization of the weak acid takes place as follows:
Answer to Problem 156AP
Solution:
The concentration of
Explanation of Solution
Given information:
A solution of two weak acids that contains
Refer to table
As
When a weak acid is dissolved in water, only partial dissociation into
The reaction of the weak acid
Prepare an equilibrium table and represent each of the species in terms of
Now, substitute these concentrations in equation (2) as follows:
Since the value of
Thus, the hydrogen ion concentration of the solution is
Now, use equation (1) to calculate the pH of the solution as follows:
The pH of the solution is
Since,
Apply equation (2) to calculate the concentration of
In only
Prepare an equilibrium table and represent each of the species in terms of
Now, substitute these concentrations in equation (2) as follows:
Since the value of
Thus,
The concentration of
According to the Le Chatelier’s principle, the higher concentration of
The pH of the solution containing
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Chapter 16 Solutions
Chemistry
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