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How is the concentration of hydronium io...

How is the concentration of hydronium ions` (H_(3)O^(+))` affected when a solution of an acid is diluted?

A

increases

B

decreases

C

no change

D

can not predict

Text Solution

Verified by Experts

The correct Answer is:
B
An acid dissociates into hydronium ions `(H_(3)O^(+))` and anions when dissolved in water. Upon dilution, the volume of the solution increases and the number of ions per unit volume decreases. Therefore, the concentration of `H_(3)O^(+))` ions per unit volume decreases.
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