The pH of a solution of hydrochloric acid is 4. The molarity of the solution is

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4.0

0.4

0.0001

0.04

answer is C.

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Detailed Solution

The pH of a solution of hydrochloric acid is 4. The molarity of the solution is 0.0001
The pH of a solution is defined as the quantitative measure of acidity and basicity of the aqueous or liquid solutions. Its formula is given as

pH = - \log [H^{+}]

Take antilog on both side and calculate concentration for

H^{+}

ion of given solution

[H^{+}] = 1 0^{- pH}

1 0^{- 4} = 0.0001

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