The degree of ionisation of 0.1 M bromoacetic acid solution is 0.132. Calculate the pH of the solution and the pKa of bromoacetic acid.

The degree of ionisation of 0.1 M bromoacetic acid solution is 0.132.

1.	The degree of ionisation of 0.1 M bromoacetic acid solution is 0.132. Calculate the pH of the solution and the pKa of bromoacetic acid.
Answer» SOLUTION :`K_a=calpha^2=0.1xx0.132xx0.132=1.74xx10^-3` `THEREFORE pKa=-logK_a=-log(1.74xx10^-3)=3-0.2405=2.76` `[H^+]=calpha=0.1xx0.132=1.32xx10^-2M` `therefore pH=-log(1.32xx10^-2)=2-0.1205=1.88`