The poH of a solution of 0.25mol/dm3 of Hcl acid is

Answer 1

solution

The hydrogen ion concen.(H+),of the acid is 0.25moldm3 ie(H)=0.25
but ph=-log{H+}
ie pH=-Log{0.25}
=-log{2.5*10`}
=-0.398+1=0.602
but pH+pOH=14
i.e 0.60+pOH=14
^pOH=14-0.60

=13.40