నైరూప్య

Isomorphous Salts with Abnormal Water Of Hydration

V.Krishnasamy , R.Kalpana devi

CuSO4.(NH4)2 SO4. 4H2O and ZnSO4.(NH4)2 SO4. 6H2O.were taken for the experiment. They were mixed in various proportions , dissolved in the required quantity of water in hot condition and allowed to crystallize in various temperatures in a thermostat Then they were separated , dried and weighed ; from the weight of mixture and the weight of water molecules , the percentage of water molecules in the each crystal was calculated by gravimetric method. Unexpected wonderful results were obtained