What is general criteria of chossing a suitable indicator for a given titration?

Options

A. The indicator should have a broad `pH` range.
B. `pH` at the end point of titration should be close of neutral point of indicator
C. The indicator should have neutral point at `pH = 7`.
D. The indicator must show a sharp colour changes near the equivalence point of titration point.

Answer

B, D

Explanation

a. Wrong: Indicator should have a small transition range.
b. Correct: `pH` at equivalence point `~~pH_(Ind)`
c. Wrong: `pH` at equivalence point and at the end point may be different.
d. Correct: Factual statement.