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100ml of 0.02M benzoic acid pk is equal to 4.2 titrated using 0.02 M NaOH .ph after 50 ml and 100ml of NaOH have been added are

100ml of 0.02M benzoic acid pk is equal to 4.2 titrated using 0.02 M NaOH .ph after 50 ml and 100ml of NaOH  have been added are 

Grade:11

1 Answers

Pooja
askIITians Faculty 477 Points
5 years ago
Dear Student,
The salt formed by the reaction of the weak acid with a strong base would be
pH= 1/2(pKw+pKa+logC)
C=0.01333
apply the formula and get the answer.

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