Concept explainers
8-38 What is the pH and pOH of each solution given the following values of [OH-)? Which solutions are acidic, which are basic, and which are neutral?
(a) 10-3 M
(b) 10-1 M
(c) 10-5 M
(d) 10-7 M
(a)
Interpretation:
pH and pOH of 10-3 m solution and whether it is acidic, basic or neutral solution to be identified.
Concept Introduction:
pH of a solution is the negative of logarithm of hydronium ion concentration which can be shown as:
pOH of a solution is the negative of logarithm of hydroxide ion concentration which can be shown as:
Where, [H3 O+ ] is the hydronium ion concentration.
[OH- ]is the hydroxide ion concentration.
The solution having pH more than 7 is considered as basic solution while the solution having pH less than 7 is considered as acidic solution.
Answer to Problem 8.38P
pOH of solution is 3, pH of solution is 11 and it is basic solution.
Explanation of Solution
Concentration of hydroxide ion.
Thus, pOH of solution is 3, pH of solution is 11 and it is basic solution.
(b)
Interpretation:
pH and pOH of 10-1 m solution and whether it is acidic, basic or neutral solution to be identified.
Concept Introduction:
pH of a solution is the negative of logarithm of hydronium ion concentration which can be shown as:
pOH of a solution is the negative of logarithm of hydroxide ion concentration which can be shown as:
Where, [H3 O+ ] is the hydronium ion concentration.
[OH- ]is the hydroxide ion concentration.
The solution having pH more than 7 is considered as basic solution while the solution having pH less than 7 is considered as acidic solution.
Answer to Problem 8.38P
pOH of solution is 1, pH of solution is 13 and it is basic solution.
Explanation of Solution
Concentration of hydroxide ion.
Thus, pOH of solution is 1, pH of solution is 13 and it is basic solution.
(c)
Interpretation:
pH and pOH of 10-5 m solution and whether it is acidic, basic or neutral solution to be identified.
Concept Introduction:
pH of a solution is the negative of logarithm of hydronium ion concentration which can be shown as:
pOH of a solution is the negative of logarithm of hydroxide ion concentration which can be shown as:
Where, [H3 O+ ] is the hydronium ion concentration.
[OH- ]is the hydroxide ion concentration.
The solution having pH more than 7 is considered as basic solution while the solution having pH less than 7 is considered as acidic solution.
Answer to Problem 8.38P
pOH of solution is 5, pH of solution is 9 and it is basic solution.
Explanation of Solution
Concentration of hydroxide ion.
Thus, pOH of solution is 5, pH of solution is 9 and it is basic solution.
(d)
Interpretation:
pH and pOH of 10-7 m solution and whether it is acidic, basic or neutral solution to be identified.
Concept Introduction:
pH of a solution is the negative of logarithm of hydronium ion concentration which can be shown as:
pOH of a solution is the negative of logarithm of hydroxide ion concentration which can be shown as:
Where, [H3 O+ ] is the hydronium ion concentration.
[OH- ]is the hydroxide ion concentration.
The solution having pH more than 7 is considered as basic solution while the solution having pH less than 7 is considered as acidic solution.
Answer to Problem 8.38P
pOH of solution is 7, pH of solution is 7 and it is neutral solution.
Explanation of Solution
Concentration of hydroxide ion.
Thus, pOH of solution is 7, pH of solution is 7 and it is neutral solution.
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Chapter 8 Solutions
Bundle: Introduction to General, Organic and Biochemistry, 11th + OWLv2, 4 terms (24 months) Printed Access Card
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