Gibbs Free Energy & Equilibrium Constant: JEE Questions & Solutions

For the reaction, N₂O₄ ⇌ 2NO₂ graph is plotted as shown below. Identify correct statements. A. Standard free energy change for the reaction…

Use the following data at 500 K: | Substance | Δ_f H^° / kJ mol⁻¹ | S^° / J K⁻¹ mol⁻¹ | |---|---|---| | AB(g) | 32 | 222 | | A₂(g) | 6 |…

Dissociation of a gas A₂ takes place according to the following chemical reaction. At equilibrium, the total pressure is 1 bar at 300 K.…

The plot of log₁₀K vs 1/T gives a straight line. The intercept and slope respectively are (where K is equilibrium constant).

The standard enthalpy and standard entropy of decomposition of N₂O₄ to NO₂ are 55.0 kJ mol⁻¹ and 175.0 J K⁻¹mol⁻¹ respectively. The…

Let us consider a reversible reaction at temperature, T. In this reaction, both Δ H and Δ S were observed to have positive values. If the…

For a reaction, if the equilibrium constant at 500 K is 4, then the value of the standard Gibbs free energy Δ G^° at this temperature is:

For a certain thermochemical reaction M → N at T = 400 K, Δ H^° = 77.2 kJ/mol, Δ S^° = 122 J/K, the log of the equilibrium constant (log K)…

Which of the following is not correct?

Consider the following reaction at 298 K: 3/2 O₂(g) → O₃(g), K_p = 2.47 × 10⁻²⁹. Δ G^° for the reaction is kJ. (Given R = 8.314 J K⁻¹ mol⁻¹)

When Δ H_vap = 30 kJ/mol and Δ S_vap = 75 J mol⁻¹K⁻¹, then the temperature at which the liquid and its vapour are in equilibrium at one…

Consider the following reaction approaching equilibrium at 27^° C and 1 atm pressure: A + B ⇌ C + D K_f = 10³, K_r = 10² The standard Gibbs…