Consider the following data for the reaction X₂(g)+Y₂(g) 2XY(g) at 600 K. The Δ r G^ (in kJ mol ⁻¹) for the reaction is: [Table — XY(g): Δ f H^ 600 K =42 kJ mol ⁻¹, S^ 600 K =200 J mol ⁻¹ K ⁻¹; X₂(g): 8, 140; Y₂(g): 80, 250]

Chemical Thermodynamics: JEE Main 2026 Chemistry question

JEE Main 2026 · 5 Apr, Evening shift · Q54

JEE Main 20265 Apr, Evening shiftChemistryMediumChemical Thermodynamics84× since 2002

Consider the following data for the reaction

\mathrm{X_2(g)+Y_2(g)\rightleftharpoons 2XY(g)}

at 600 K. The

\Delta_rG^\ominus

(in kJ mol

^{-1}

) for the reaction is : [Table —

\mathrm{XY(g)}

\Delta_fH^\ominus_{600\,K}=42

kJ mol

^{-1}

S^\ominus_{600\,K}=200

J mol

^{-1}

^{-1}

;

\mathrm{X_2(g)}

: 8, 140;

\mathrm{Y_2(g)}

: 80, 250]

JEE Main 2026 Chemical Thermodynamics Question with Solution (5 Apr Evening shift, Q54) | JEE Arc