The pH of an aqueous solution of a salt is 10. The salt is
Answers
Answered by
12
Explanation:
Given:
K
w
=10
−14
,K
b
=10
−5
,C=0.1M
pK
w
=−log(K
w
)=−log(10
−14
)=14
pK
b
=−log(K
b
)=−log(10
−5
)=5
pH of a weak base and strong acid is given by the following formula:
pH=
2
1
pK
w
−
2
1
pK
b
−
2
1
log(C)
⇒pH=
2
1
(14)−
2
1
(5)−
2
1
log(0.1)
⇒pH=7−2.5+(
2
1
)
⇒pH=5
Answered by
0
If pH = 10, it should be the mixture of weak acid and strong base i.e., CH3COONaCH3COONa
CH3COOH+NaOH⇔CH3COONa+H2OCH3COOH
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