hould have aragraph For Questions 31 32 Dehydration of salts

Last updated: 7/4/2023

hould have aragraph For Questions 31 32 Dehydration of salts is an important class of heterogeneous reactions The salt hydrates during dehydration often dissociates in steps to form a number of intermediate hydrates according to the prevailing pressure of moisture in contact with the solid hydrates Thus copper sulphate pentahydrate solid on dissociation yields trihydrates solid monohydrates solid and then the anhydrous salt solid in the above order as follows Pressure mm of lig CuSO4 5 H O CuSO3 H O SO4 H O 2H O g PH 0 5 6 CuSO H O CuSO4 H O g PH O 0 8 CuSO4 3 H O 2H O g PH 0 7 8 Moles of water moles of CuSO The equilibrium constant K in the unit of mm for the equilibrium between entahydrate and trihydrate is