The pH of a solution is 5.0. If pH is increased upto 2.0 by adding an acid, increase in hydrogen ion concentration is

Options

A. 100 times
B. 10 times
C. 1000 times
D. 10000 times

Answer

C

Explanation

If `pH=5.0 [H^+]=1xx 10^(-5)`
If pH=2.0, `[H^+] = 1xx 10^(-2)`
`( ([H^+]_f)/([H^+]_f) ) = (10^(-2))/(10^(-5)) = 1000`
So,` [H^+]_f = 1000 [H^+]_f`