Question

0.4 grams of NaOH is added to 100 ml of 0.1 M NaOH solution and the volume of

solution is made to 200ml by adding water. Calculate the molarity of the resulting

solution​

Answer 1

Answer:

NaOH+CH

3

COOH⟶CH

3

COONa+H

2

O

10 m mol 20 m mol

0 10 m mol 10 m mol

Now it is a buffer

pH=pk

a

+log[

acid

salt

]

pH=4.74+log1=4.74