Question

0.45 gm of calcium carbonate is dissolved in 1 liter of distilled water. 50 ml of this

standard hard water requires 20 ml of EDTA solution. 50 ml of unknown hard water requires 12 ml of EDTA solution. 50 ml of same water sample after boiling requires 8 ml of EDTA solution. Calculate Total, Permanent and Temporary hardness of water sample

Answer 1

Answer is given below