Equilibrium Question 420

Question: The pH of 10−5 M aqueous solution of NaOH is [MP PET 1996]

Options:

A) 5

B) 7

C) 9

D) 11

Show Answer

Answer:

Correct Answer: C

Solution:

NaOH ⇌ Na++OH−

[OH−]=10−5 M ; [H+][OH−]=10−14

[H+]=10−1410−5 ; [H+]=10−9 M ; pH=9 .

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