Mrscici Mrscici

09-03-2017
Chemistry

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Why is it logical to assume that the hydrogen ion concentration in an aqueous solution of a strong monoprotic acid equals the molarity of the acid ?

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scme1702 scme1702

19-03-2017

Strong acids are those that dissociate completely into their ions. So the dissociation equation for a strong acid is:
HA → H⁺ + A⁻

It is visible from the equation that the number of moles of hydrogen ions released is equivalent to the number of moles of acid. For a given volume,
[HA] → [H]⁺ + [A]⁻
Thus, the assumption is logical and fairly accurate

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