JEE Main 2025 (2 Apr, Shift 2) Chemistry Q54: Which of the…

Question

Which of the following graphs correctly represents the variation of thermodynamic properties of Haber's process ?

Accepted Answer

Option 2: [figure: plot vs T/K with y ticks 300 to -200; curves labelled $-\Delta H_R^	heta/T$ (top, from about 300 falling to about 150), $-\Delta G_R^	heta/T$ (from about 100 falling through 0 to negative), $\Delta H_R^	heta$ (about -100, flat), $\Delta S_R^	heta$ (about -200, flat)]

Answer

[figure: plot vs T/K with y ticks 300 to -200; curves labelled $-\Delta G_R^	heta/T$ (top, about 300 falling to about 200), $-\Delta H_R^	heta/T$ (from about 100 falling through 0 to negative), $\Delta H_R^	heta$ (about -100, flat), $\Delta S_R^	heta$ (about -200, flat)]

Answer

[figure: plot vs T/K with y ticks 300 to -200; curves labelled $-\Delta H_R^	heta/T$ (top, from about 300 falling to about 150), $-\Delta G_R^	heta/T$ (from about 100 falling through 0 to negative), $\Delta H_R^	heta$ (about -100, flat), $\Delta S_R^	heta$ (about -200, flat)]

Answer

[figure: plot vs T/K with y ticks 200 to -200; curves labelled $-\Delta H_R^	heta$ (top, from about 200 falling to about 100), $-\Delta G_R^	heta/T$ (from about 100 falling through 0 to negative), $\Delta H_R^	heta/T$ (about -100, flat), $\Delta S_R^	heta/T$ (about -200, flat)]

Answer

[figure: plot vs T/K with y ticks 200 to -300; curves labelled $\Delta S_R^	heta$ (top, from about 200 falling to 100), $\Delta H_R^	heta$ (about 100, flat), $-\Delta G_R^	heta/T$ (rising from about -150 to 0), $-\Delta H_R^	heta/T$ (rising from about -300 to about 100)]

JEE Main 2 April 2025, Shift 2, Chemistry Q54

Same idea in other shifts