In a mixture of a weak acid and its salt, the ratio of concentration of acid to salt is increased ten-fold. The pH of the solution
(1)Decreases by one
(2) Increases by one-tenth
(3) Increases by one
(4) Increases ten-fold
Answers
Answered by
31
Answer:
(1) decreases by 1
Explanation:
initial pH = - log[H]
final pH = - log[10H]
= - log[10] + (- log[H] )
= -1 + initial pH
final pH = initial pH - 1
Answered by
0
Answer:
1) Decrease by one
Explanation:
pH = pKa + log [Salt] / [Acid]
As they have given 10 fold means reverse and acid gains 10
pH = pKa - log 10[Salt] / [Acid]
pH = pKa - log 10/1
pH = Pka - 1
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