The pH of a 0.0145M perchloric acid solution is: A 7.0 B 1.84 C 12.2

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Question

The pH of a 0.0145M perchloric acid solution is:

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Answer 1

Answer #1

Perchloric acid is strong acid and dissociates completely.

HClO₄ --------> H⁺ + ClO₄^-

1 mole HClO4 produce 1 mole H+. (Ratio 1:1).

Therefore, molarity of H+ = HClO4 = 0.0145 M.

Now, pH = - log [H⁺]

= - log ( 0.0145 )

= 1.838 = 1.84

Ans = B = 1.84.

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Answer 2

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