Published by:
CGP EDU Academic Team
Published on: August 11, 2026
K a for a monobasic acid, whose 0.1 M solution has pH of 4.5, is:
A
10 –10
B
10 –8
C
× 10 –4
D
× 10 –6
Text Solution
Verified by ExpertsThe correct answer is:
B
pH = 
(pK a – log C) ⇒ 9 = pK a + 1 ⇒ pK a = 8 ⇒ K a = 10 –8
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