EK #792 Acid/Base Question

[betterfuture]

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Which of the following influences the pH of an aqueous solution of a weak base?

The answer was the concentration of the base and the pKb of the base

However, another option said volume of the solution. If concentration is moles/L, then how does volume not effect pH yet concentration can? Doesn't diluting the solution affect the pH if say one adds water?

 

[aldol16]

It's talking about the solution, not the solvent. You're correct that adding more solvent would reduce the pH of the solution. However, adding more solution won't.

 

[betterfuture]

Ah man, I can already tell your going to crush that MCAT.