Answer : The pH of the solution is, 5.01
Explanation :
For acetic acid : 
First we have to calculate the concentration of acetic acid and sodium acetate.
Concentration of acetic acid (Acid) = 
Concentration of sodium acetate (salt) = 
Now we have to calculate the pH of the solution.
Using Henderson Hesselbach equation :
![pH=pK_a+\log \frac{[Salt]}{[Acid]}](https://tex.z-dn.net/?f=pH%3DpK_a%2B%5Clog%20%5Cfrac%7B%5BSalt%5D%7D%7B%5BAcid%5D%7D)
Now put all the given values in this expression, we get:


Therefore, the pH of the solution is, 5.01