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Chemistry
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1. Calculate the pH of a 7.71×10-3 M solution of H2SO4

(Ka = 0.0120 for HSO4-)2. In a 6.22×10-2 M solution, a monoprotic acid, is 27.5% dissociated. 

Calculate Ka for this acid.

Feb 11th, 2015

H2SO4 is a strong acid
Therefore, use the following equation:

pH = -log [H+]
[H2SO4] = 7.71x10^-3
[H+] = 2*[H2SO4] = 1.542 x 10^-2

pH = -log(1.542 x 10^-2)
pH = 1.81

Feb 11th, 2015

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