what is universal indicator
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A universal indicator is a pH indicator made of a solution of several compounds that exhibits several smooth colour changes over a wide range pH values to indicate the acidity or alkalinity of solutions.
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Universal indicators are mixtures of organic dyes or mixed indicators e.g. pH paper or solution. It indicates the strength or pH range of the acidic or alkaline solution. It can be utilized for determining the strength of acids or alkaline solutions and it can be used to differentiate between acidic or basic solutions of different pH values,by giving different colours with different pH values.
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