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Question

9.8g of H2SO4 is present in 500mL of the solution. Calculate the pH of the solution.

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Solution

Molarity of H2SO4=9.8×100098×500=0.2M
As H2SO4 is strong acid so it dissociates completely to give H+ ions.
H2SO42H++SO24
0.2
0.2×2 0.2
[H+]=2×0.2=0.4M
pH=log([H+])=0.3979

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