Answer to Question #81268 in General Chemistry for Taylor

Question

It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the water (dehydration).

Write an equation that shows the dehydration of manganese(II) sulfate heptahydrate.
Use an asterisk to enter the dot.

Answer 1

MnSO4*7H2O(s) →t MnSO4(s) + 7H2O(g)

This should be an endothermic reaction. The water molecules are interacting with the Mn2+ and SO42- ions within the crystal lattice of the compound. You must overcome those interactions, and so that would require the input of energy.