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What is the pH of 1mM concentrated sulfuric acid?

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in Chemistry – Class 12 by (188k points)
What is the pH of 1mM concentrated sulfuric acid?

(a) 3.01

(b) 2.75

(c) 1.03

(d) 2.00

I have been asked this question during an interview.

I'd like to ask this question from P-Block Elements topic in section P-Block Elements of Chemistry – Class 12

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The correct choice is (b) 2.75

Easy explanation: pH refers to the power of hydrogen ions in the acid solution. It is calculated as the negative logarithm of the concentration of hydrogen ions. In case of 1mM of conc. sulfuric acid it is found that the concentration of hydronium ions is 10^-2.75mol dm^-3.

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