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19-04-2021
Chemistry

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Calculate the pOH of a 7.68x10-7 M HCl solution.

pOH = (round to 3 sig figs)

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maacastrobr maacastrobr

21-04-2021

Answer:

pOH = 7.89

Explanation:

As HCl is a strong acid, [H⁺] is equal to the original acid concentration. In other words:

[H⁺] = 7.68x10⁻⁷ M

Knowing [H⁺], we calculate the pH of the solution:

pH = -log[H⁺]

pH = 6.11

With the pH, we can calculate the pOH of the solution, using the following formula:

pOH = 14 - pH

pOH = 7.89

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