Entropy & Spontaneity: JEE Questions & Solutions

Ice at -5^° C is heated to become vapor with temperature of 110^° C at atmospheric pressure. The entropy change associated with this…

The effect of temperature on the spontaneity of reactions are represented as: | | Δ H | Δ S | Temperature | Spontaneity |…

Let us consider an endothermic reaction which is non-spontaneous at the freezing point of water. However, the reaction is spontaneous at…

Standard entropies of X₂, Y₂ and XY₅ are 70 J K⁻¹ mol⁻¹, 50 J K⁻¹ mol⁻¹, and 110 J K⁻¹ mol⁻¹ respectively. The temperature in Kelvin at…

Which of the following relations are correct? (A) Δ U = q + pΔ V (B) G = H - TS (C) Δ S = q_rev/T (D) Δ H = Δ U - Δ n R T Choose the most…

30.4 kJ of heat is required to melt one mole of sodium chloride and the entropy change at the melting point is 28.4 J K⁻¹ mol⁻¹ at 1 atm.…