Equilibrium Question 448

Question: $ pH $ of $ HCl,({10^{-12}}M) $ is [CPMT 1997; Pb. PET/PMT 1999]

Options:

A) 12

B) $ -12 $

C) $ \approx 7 $

D) 14

Show Answer

Answer:

Correct Answer: C

Solution:

As the solution is acidic $ pH<7 $ . This is because $ [{H^{+}}] $ from $ H_2O[{10^{-7}}] $ cannot be neglected in comparison to $ {10^{-12}} $ M.



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