250 mL of a water sample on EDTA titration with Eriochrome Black –T consumed 13 mL of 0.022 N EDTA till end point is reached. Calculate the hardness of water ?a.11.44 ppmb.114.4 ppmc.1.14 ppmd.1144 ppm

In an EDTA experiment, the following values are obtained. Calculate the different types of hardness. (EDTA =0.01M) i) 50 ml hard water sample = 25 ml EDTA ii) 50 ml boiled water sample = 14 ml EDTA

0.50 g of CaCO3 was dissolved in HCl and diluted to 500 ml. 100ml of this solution required 20 ml of EDTA solution for titration. 100 ml of hard water sample required 30 ml of the same EDTA solution for titration. On boiling, titration of 100ml of same water sample required 10 ml of EDTA. Calculate total, temporary and permanent hardness of water. 5M (1 ml of 0.01M EDTA= 1mg of CaCO3)

Calculate the total and permanent hardness in ppm in given water sample:1. 50 mL of standard hard water, containing 1 mg, pure CaCo3 per mL, consumed 20 mL EDTA solution.2. 50 mL of the water sample consumed 30 mL EDTA solution using EBT indiactor.3. 50 ml of the water sample after boiling and filtering consumed 10 mL of EDTA solution.

Estimate EDTA method of determining hardness of water

Hardness of water is estimated simple titration with-Na[EDTA]Na2[EDTA]Na3[EDTA]Na4[EDTA]