Question

A 0.001 M solution of HCl is prepared. What are the hydronium & hydroxide ion concentrations?

Answer 1

Answer:

pH

=

3

 

Hydrochloric acid,  

HCl

, is a strong acid, which means that it dissociates completely in aqueous solution to form hydronium ions,  

H

3

O

+

, and chloride anions,  

Cl

−

, in a  

1

:

1

mole ratio.

This tells you that every mole of hydrochloric acid will dissociate to produce one mole of hydronium ions and one mole of chloride anions in aqueous solution.