Which indicator is generally used in estimation of hard water concentration using complexometric titration ?
1 point
Phenolpthalein
Methyl Orange
Eriochrome Black T
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Answer:
Eriochrome Black-T (EBT)
The total hardness of water is estimated by titrating the water sample against EDTA using Eriochrome Black-T (EBT) indicator.
Explanation:
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