Concept explainers
Calculate the pH of a solution that is 0.22 M in nitrite ion
(a)
11.79
(b)
8.34
(0
5.65
(d)
7.00
(e)
2.21
Interpretation:
The pH of the solution that contains the nitrite ion is to be determined.
Concept introduction:
The ionic reaction that takes place is
Here,
The relationship between
The formula to calculate the pOH of the solution from the concentration of hydroxide ions is
pH is the measure of acidity of a solution and it depends on the concentration of hydronium ions and temperature of the solution. The relationship between pH and pOH is
Answer to Problem 1KSP
Solution:
Explanation of Solution
Given information:
The concentration of nitrite ion
The anion
Now, prepare an equilibrium table and represent each of the species in terms of
Now, substitute these concentrations in equation (2) as
Since the value of
Thus,
Now, substitute the value of
Substitute this value of pOH in equation (4) to calculate the pH of the solution as
Therefore, the pH of the solution is
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