For calcium bromide to dissolve in water the sum of the ______ energy plus the _

Question

For calcium bromide to dissolve in water the sum of the ______ energy plus the ______ energy must be less than the ______ energy.

A

molecule hydration     hydrogen bond                        covalent bond

B

covalent bond              molecule hydration                 hydrogen bond

C

ion hydrations hydrogen bond                        ionic bond

D

ionic bond                   ion hydrations hydrogen bond

E

ionic bond                   hydrogen bond                        ion hydrations

F

covalent bond              hydrogen bond                        molecule hydration

Explanation / Answer

For a salt to dissolve in water , its lattice energy shuld be less than hydration energy of the ions formed.

Lattice energy can be taken as the sum of ionic bond strength and the hydrogen bond energy of the salt .

Thus the option Esum of ionic bond + hydrogen bond should be less than ionic hydration energy.

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