NEETChemistry-Thermodynamics

NEET Chemistry Bond Energy MCQ Question

Type: MCQ-numerical-Hard-Class 11

The bond dissociation energies of X₂, Y₂ and XY are in the ratio of 1 : 0.5 : 1. ΔH for the formation of XY is –200 kJ mol⁻¹. The bond dissociation energy of X₂ will be

A

200 kJ mol⁻¹

B

100 kJ mol⁻¹

C

400 kJ mol⁻¹

D

800 kJ mol⁻¹

Correct Answer

Option C

Detailed Explanation

Using the given ratio and the enthalpy change for the formation of XY, the bond dissociation energy of X₂ can be calculated.

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