Question: Please help In a total hardness determination using EBT as the indicator, the endpoint of the titration will apear blue due to unbound EDTA purple

Please help In a total hardness determination using EBT as the indicator, Please help

In a total hardness determination using EBT as the indicator, the endpoint of the titration will apear blue due to unbound EDTA purple from the mix of unbound EBT and bound EDTA wine-red due to bound EBT wine-red due to bound EDTA blue due to unbound EBT purple from the mix of bound EBT and unbound EDTA

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