K_a for butyric acid (C_ 3 H_ 7 COOH) is 2 10^ -5 . The pH of 0.2 M solution of butyric acid is _____ 10^ -1 . (Nearest integer) (Given log 2 = 0.30)

JEE Main 2022 Chemistry question

for butyric acid is . The pH of 0.2 M solution of butyric acid is . (Nearest integer) (Given log 2 = 0.30)

Answer: 27

With = , and $ =

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Question ID VK-034770