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find the hydronium ion concentration and the pH of a 0.500 mol/L solution of hydrochloric acid

find the hydronium ion concentration and the pH of a 0.500 mol/L solution of hydrochloric acid

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Answer #1

Hydrochloric acid is a strong acid that completely dissociates in water.

For a 0.500 M HCl solution the concentration of the hydrogen ions, [H+], is 0.500 moles/liter (i.e. 0.5 M).

pH is defined as −log[H+].

Substituting 0.500 into the equation for pH we find that the 0.5 M HCl solution has a pH = -log(0.5) = 0.301.

FOR THE GIVEN PH VALUE OF 0.301, THE VALUE OF HYDRONIUM ION CONCENTRATION IS,

=10^(-0.301) = 0.500

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