Question

Question 5
How is the concentration of hydronium ions $\left({\text{H}}_3{\text{O}}^{+}\right)$ affected when a solution of an acid is diluted?

Answer 1

When an acid is diluted, the concentration of hydronium ions $\left({\text{H}}_3{\text{O}}^{+}\right)$ per unit volume decreases. This also decreases that the strength of the acid.