Q.

Born Haber cycle helps to determine lattice enthalpy of ionic compound as well as electron gain enthalpy of different elements. Based on the diagram drawn, answer the questions given below.

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What is the electron gain enthalpy of Cl(g)?

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a

- 5kJ

b

-25kJ

c

-20kJ

d

-10 kJ

answer is D.

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Detailed Solution

The change in enthalpy associated with the formation of one mole of an ionic compound from its gaseous state and standard conditions.

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ΔHeg of Cl=202=10kJ

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