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

Question

What is general criteria of choosing a suitable indicator for a given titration? (A) The indicator should have a broad pH range (B) pH at the end point of titration should be close to neutral point of indicator (C) The indicator should have neutral point at pH =7 (D) The indicator must show a sharp colour change near the equivalence point of titration point

Tardigrade Admin · Accepted Answer

a. Wrong: Indicator should have a small transition range
b. Correct:

p H

at equivalence point

= p H_{Ind}

c. Wrong:

p H

at equivalence point and at the end point may be different
d. Correct: Factual statement

Q. What is general criteria of choosing a suitable indicator for a given titration?

The indicator should have a broad $p H$ range

$p H$ at the end point of titration should be close to neutral point of indicator

The indicator should have neutral point at $p H = 7$

The indicator must show a sharp colour change near the equivalence point of titration point

a. Wrong: Indicator should have a small transition range
b. Correct: $p H$ at equivalence point $= p H_{Ind}$
c. Wrong: $p H$ at equivalence point and at the end point may be different
d. Correct: Factual statement

Q. What is general criteria of choosing a suitable indicator for a given titration?

The indicator should have a broad pH range

pH at the end point of titration should be close to neutral point of indicator

The indicator should have neutral point at pH=7

The indicator must show a sharp colour change near the equivalence point of titration point

a. Wrong: Indicator should have a small transition range b. Correct: pH at equivalence point =pHInd ​ c. Wrong: pH at equivalence point and at the end point may be different d. Correct: Factual statement

The indicator should have a broad $p H$ range

$p H$ at the end point of titration should be close to neutral point of indicator

The indicator should have neutral point at $p H = 7$

a. Wrong: Indicator should have a small transition range
b. Correct: $p H$ at equivalence point $= p H_{Ind}$
c. Wrong: $p H$ at equivalence point and at the end point may be different
d. Correct: Factual statement