Explanation:
It is known that formula to calculate the pH of acidic buffer solution is as follows.
pH = [tex]pK_{a} + log(\frac{[salt]}{[acid]})[/tex]
It is given that [salt] (sodium chloroacetate is 0.19 M and [acid] (chloroacetic acid) is 0.36 M. Hence, putting the given values into the above formula as follows.
pH = [tex]pK_{a} + log(\frac{[salt]}{[acid]})[/tex]
= [tex]-log K_{a} + log(\frac{[salt]}{[acid]})[/tex]
= [tex] -log (1.3 \times 10^{-3} + log \frac{0.19}{0.36}[/tex]
= 2.602
Thus, we can conclude that pH of given buffer solution is 2.602.
