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Phenol red indicates for acidic pH. When the red solution turns yellow it means the solution has a low pH.
For Example:
CO2 dissolves into water and forms carbonic acid which lowers the pH and the solution would turn yellow.
What else can I help you with?
What does a red eye indicate?
Death....
What does a red flag indicate in javelin?
Foul
Which type of extinguisher does red indicate?
water
What does a red light around an atom indicate?
there is no red light around an atom
What does a red belt in jujitsu indicate?
Grand Master
Do flashing red lights always indicate that you must stop?
Flashing red lights typically indicate that you must stop, but there may be exceptions depending on the specific situation and traffic laws.
What does a red and greed light indicate when heading toward you at night?
A red light on the left and a green light on the right indicate that you are looking at the port (left) side of a boat that is heading toward you at night.
Are red bananas ripe when they have a deep red color, or should they be a different shade to indicate optimal ripeness?
Red bananas are ripe when they have a deep red color.
Are red giants stars the youngest?
No. Unless a star is a red giant (in which case it is old and dying) a red color does not indicate anything about its age.
What is and acid and base indicate?
Red cabbage or beetroot juice will do the job.
What does red indicate on a topographic map?
Low pressure which can mean storminess.
What do Pink and red dots on m8 paper indicate?
Pink dots on M8 paper indicate liquid nerve agents, while red dots indicate blister agents. These are used to detect chemical warfare agents on surfaces.
