Because phenophthalein has the specific ability. Phenophathalein can convert color from colorless(at pH < 8 approximately) into pink (at pH >,= 8 approximately). With this ability, it can indicate properties of other substances which is change in pH.
Indicators are chemicals that change color in the presence of an acid or a base. The most commonly used indicator is phenophthalein.
A pitch indicator is called a metronome tuner.
This substance is called indicator.
a leading indicator
# Litmus paper # Phenophthalein # methly orange # Screened methy orange # bromothymol blue
The temperature indicator is called a thermometer. The birds flying south are a good indicator of winter's approach.
cuz
The point at which the indicator changes color in a titration is called the endpoint.
Bass Clef
An X, Y indicator.
toll signature
it is called a shift indicator (light)