Calculate [H^(+) ]in a 0.1 M solution of dichloroacetic acid (K_a =5 xx 10 ^(-2))that also contains 0.1 M sodium dichloroacetae. Neglect hydrolysis of sodium salt. If [H^(+) ]= yxx 10 ^(-2)then what is the value of y ?

Calculate [H^(+) ]in a 0.1 M solution of dichloroacetic acid (K_a =5 x

1.	Calculate [H^(+) ]in a 0.1 M solution of dichloroacetic acid (K_a =5 xx 10 ^(-2))that also contains 0.1 M sodium dichloroacetae. Neglect hydrolysis of sodium salt. If [H^(+) ]= yxx 10 ^(-2)then what is the value of y ?
Answer» Solution :` PH= pKa+log ""(S)/(A)=2- log 5 +log ""(0.1)/(0.1) ` ` pH =2 -log 5 rArr [H^(+)] =5 xx 10 ^(-2) `