The substance is the monoglucoside of malvidin.
It is a substance(chemical or natural) which changes colour in the presence of an acid or base.
An acid base indicator is a chemical substance that has the ability to change color depending on the pH.
Grapes are acidic in nature. They are sour in taste.
Grapes are acidic in nature. They are sour in taste.
Recreation of an indicator using an acid and a base involves mixing a colorless or faintly colored acid-base indicator with an acid to make the solution acidic (and change color) and then adding a base to neutralize the acid and return the indicator to its original color. This process demonstrates the reversible nature of acid-base indicators and how they can be used to visually indicate the presence of acids or bases in a solution.
Indicator is a process which is used to find out the substanceis acid,base and salt. example: litmus paper and termuric both are natural indicator. example of artificial indicator: mithyl orange and phenolphtaceil
This indicator changes his color.
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common household indicators of acid base
it has (red acid) and a (blue base)
abbas
The most appropriate indicator for a strong acid/strong base titration is phenolphthalein.