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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 change of pH of the titration mixture in this experiment? pH V(mL) (A) pH V(mL) (B) pH V(mL) (C) pH V(mL) (D)

1. (C)
2. (B)
3. (A)
4. (D)

Correct answer: (A)

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