Ionic EquilibriumHard
Question
Choose the correct statement
Options
A.pH of acidic buffer solution decrease if more salt is added.
B.pH of acidic buffer solution increases if more salt is added.
C.pH of basic buffer decreases if more salt is added.
D.pH of basic buffer increases if more salt is added.
Solution
(B) is correct because pH = pKa + log 
for acidic buffer.
If [Salt] increases, pH of acidic buffer will increase.
pOH = pKb + log
for basic buffer.
If [Salt] increases, pOH will increase, pH will decrease as pH = 14 - pOH.
Therefore (C) is correct but (D) is wrong.
(A) is not correct pH = pKa + log
If [Salt] increase, pH will increase.
for acidic buffer.If [Salt] increases, pH of acidic buffer will increase.
pOH = pKb + log
for basic buffer.If [Salt] increases, pOH will increase, pH will decrease as pH = 14 - pOH.
Therefore (C) is correct but (D) is wrong.
(A) is not correct pH = pKa + log
If [Salt] increase, pH will increase.
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