Equilibrium Question 398

Question: A solution has pH=5 , it is diluted 100 times, then it will become [NCERT 1978; AFMC 2005]

Options:

A) Neutral

B) Basic

C) Unaffected

D) More acidic

Show Answer

Answer:

Correct Answer: A

Solution:

pH=5, means [H+]=105M. After dilution [H+]=105/100=107M

[H+] from H2O cannot be neglected. Total [H+]=107+107=2×107

pH=70.3010=6.6990=7 (neutral).



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