Which indicator is best suited to determine the equivalence point of a titration of diethlyamine with HBr?

Question

pKb of diethylamine=3.16

A) phenolpthalein pKHIN ~9
B) bromo blue pKHIN ~4
C) alizarin yellow pKHIN~11
D) methyl violet pKHIN~ 1
E) phenol red pKHIN ~ 7.5
?

Answer 1

Phenolpthaline