Question

17. IE, and IE, of Mg are 179 and 348 kcal mol-respectively. The energy required for
the reaction Mg + Mg2+ + 2 e is
a) +169 kcal mol-1
b) - 169 kcal mol-1
c) + 527 kcal mol-1
d) - 527 kcal mol-1​

Answer 1

+527 is the answer as it is loosing two electrons to attain stable configuration.. it needs more energy...

hope it helps u friend......

Answer 2

Answer:

c) +527kcal mol-1 is the correct answer

Explanation:

Ionisation is an endothermic process. So, the total ionisation energy for ionisation of 2 electrons is the summation of first ionisation enthalpy and second ionisation enthalpy.

IE = 179+348=527 kcal mol-1

(or)

Mg(g)⟶Mg

+2

(g)+2e

−

is

Mg→Mg

+

→Mg

+2

so energy required for the reaction is 179+348=527 kcal/mol.

hope it helps you

thank you