Question #9698a

1 Answer
Aug 19, 2016

pH=0.35

Explanation:

The hydrochloric acid is a strong acid and therefore, it is considered to completely dissociate in water as follows:

HCl(aq)H+(aq)+Cl(aq)

in this case, since the [HCl]=0.45M, the concentration of hydrogen ion in solution is also considered to be [H+]=0.45M

The pH of the solution is calculated by:

pH=log[H+]

pH=log(0.45)=0.35

here is a complete lesson on how to calculate the pH of a strong acid:
Acids & Bases | pH of a Strong Acid & a Strong Base.