In an acid base titration, 0.1 M HCI solution was added to the NaOH solution of unknown strength. Which of the following correctly shows the change of pH of the titration mixture in this experiment?

Options

A. c
B. a
C. d
D. b

Answer

B

Explanation

Initially solution is of NaOH therefore pH is high then it starts decreasing with addition of HCl. After equivalence point pH will become constant and in acidic range due to presence of strong acid.