what will happen to ph of an acid if it is diluted 100times?. Explain in detail with formula used

Asked by  | 29th Aug, 2011, 12:00: AM

Expert Answer:

pH =-log[H+]
if we increase dilution by 100 times then the concentration of the acid becomes 1/100 times and same with [H+] ions .Here , we are considering that the acid is a strong acid and it will dissociate compeletly into its ions.
after dilution the pH becomes pH =-log[1/100 H+]
pH =-log[1/102H+]
pH =-(-2)log[H+]
pH becomes twice that of the acid before dilution.

Answered by  | 30th Aug, 2011, 10:59: AM

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