Question

Phenolphthalein solution is used as an indicator of acids and bases. If added to an ammonia-based solution of window cleaner, we would expect the solution to turn
A) blue.
B) brown.
C) pink.
D) yellow.

Answer 1

C.) pink In a base, with a pH> 8.2, we would expect the indicator to turn pink. Phenolphthalein is colorless in an acidic or neutral solution; it turns from pink to fuchsia in a basic solution. Cleaners and products containing soaps, are bases.

Answer 2

the answer is C.) PINK