JEE Advanced Chemistry question

Cl2O, Br2O, I2O have positive value of ΔG (free energy) indicating that

(A)These oxides are stable
(B)These oxides are unstable and changes to X2 and O2Correct
(C)These disproportionate into X− and XO−
(D)These oxides can form interhalogen compounds

Answer: (B)

Solution

A positive (unfavourable) Gibbs free energy of formation means the oxide is thermodynamically unstable with respect to decomposition back into its elements: 2X2O → 2X2 + O2 becomes the spontaneous direction, so these halogen(I)

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Question ID VK-159393