In an acid-base titration, 0.1 M HCl solution was added to the NaOH solution of unknown strength. Which of the following correctly shows the changes of pH of the titration mixture in this experiment?(1) (2) (3) (4)

In an acid-base titration, 0.1 M HCl solution was added to the NaOH so

1.	In an acid-base titration, 0.1 M HCl solution was added to the NaOH solution of unknown strength. Which of the following correctly shows the changes of pH of the titration mixture in this experiment?(1) (2) (3) (4)
A.	(2)
B.	(1)
C.	(3)
D.	(4)
Answer» C. (3)