Measuring pH Solution Using Acid Base Indicator

Measurement Tool	pH range	Acid	Base
Litmus Phenolphtalein Metil orange Metil red Bromtimol blue Universal indicator pH meter	5.5 - 8 8.3 - 10 2.8 - 4 4.2 - 6.3 6.0 - 7.6 0 - 14 0 - 14	Red No color Red Red Yellow -- --	Blue Red Yellow Yellow Blue -- --

Example: Next stretch indicator data basa acid.

Indicator	Stretch pH	Changes color
Metil purple Bromkesol green Bromtimol blue	0.5 - 1.5 3.8 - 5.4 6.0 - 7.6	Yellow - purple Yellow - blue Yellow - blue

Determining with the value of pH with indicator solution data

given:
with metil purple indicator, purple
with bromkesol green indicator, blue
with bromtimol blue indicator, yellow
Determine the pH range of the solution!
Answer:
According to data range pH indicator:
With metil purple indicator, purple, the pH solution > 1.5.
With bromkesol green indicator, blue, the pH solution > 5.4.
With bromtimol blue indicator, yellow, the pH solution <>