Question

why do you need indicator​

Answer 1

Answer:

The common application of indicators is the detection of end points of titrations. The colour of an indicator alters when the acidity or the oxidizing strength of the solution, or the concentration of a certain chemical species, reaches a critical range of values.

Answer 2

Answer:

chemical indicator, any substance that gives a visible sing, usually by a colour change, of the presence or absence of a throw hold concentration of a chemical spices, such as an acid or an alkali in a solution .

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