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The pH of sulphuric acid solution is 2.3...

The pH of sulphuric acid solution is 2.3. What is the molar concentration of the acid ?

Text Solution

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For sulphuric acid solution, pH = 2.3
`[H^(+)] = 10^(-pH) = 10^(-2.3) = 10^(-3) xx 10^(0.7) = 5 xx 10^(-3) mol L^(-1)`
For sulphuric acid solution, `[H^+ ] = 2[H_2 SO_4 ]`
Molar concentration of `H_2 SO_4 =([H^(+)])/(2) = ( 5 xx 10^(-3))/(2) = 2.5 xx 10^(-3) mol L^(-1)`
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