NEET Chemistry Thermodynamics Class 11 Questions

If for a gas \( \frac{R}{C_v} = 0.67 \), this gas is made up of molecules which are

Which of the following statements (s) is/are true? “Internal energy of an ideal gas — ”

Which of the following graphs represents exothermic reaction?

Match the column I with column II and mark the appropriate choice

For an isothermal reversible expansion process, the value of q can be calculated by the expression

Which is the correct relationship between ΔG° and equilibrium constant Kₚ?

Which of the following statements regarding Gibb's energy change is correct?

In isolated system, find the condition for spontaneous reaction.

For a reaction to be spontaneous at any temperature, the conditions are

On the basis of thermochemical equations (i), (ii) and (iii), find out which of the algebraic relationships given in options (a) to (d) is correct: (i) C(graphite) + O₂(g) → CO₂(g) ; ΔH = x kJ mol⁻¹ (ii) C(graphite) + 1/2O₂(g) → CO(g) ; ΔH = y kJ mol⁻¹ (iii) CO(g) + 1/2O₂(g) → CO₂(g) ; ΔH = z kJ mol⁻¹

The bond dissociation energies of X₂, Y₂ and XY are in the ratio of 1 : 0.5 : 1. ΔH for the formation of XY is –200 kJ mol⁻¹. The bond dissociation energy of X₂ will be

When 1 mole of a gas is heated at constant volume, temperature is raised from 298 to 308 K. If heat supplied to the gas is 500 J, then which statement is correct?

Considering entropy (S) as a thermodynamic parameter, the criterion for the spontaneity of any process is

The entropy change can be calculated by using the expression, ΔS = qrev/T. When water freezes in a glass beaker, choose the correct statement amongst the following:

For a reaction, A(g) ⟶ A(l); ΔH = -3RT. The correct statement for the reaction is

Based on the first law of thermodynamics, which one of the following is correct?

The entropy change can be calculated by using the expression ΔS = qₑₓₜ/T. When water freezes in a glass beaker, choose the correct statement amongst the following.

Which of the following relation is not correct?

Consider the following reaction: 2A(g) + B(g) → 2D(g) ΔU° = −10 kJ mol⁻¹ and ΔS° = −44 J K⁻¹ at 298 K. Identify the correct option with ΔG° for the reaction and spontaneity of the reaction at 298 K. (Given: R = 8.31 J mol⁻¹ K⁻¹)

At a certain temperature, T (K), during a process, 500 J is absorbed by the system and work of 200 J is done by the system. Then change in internal energy of the system is:

The CORRECT thermodynamic conditions for the spontaneous reaction at all temperatures is ________.

Consider the following liquid-vapour equilibrium. Liquid ⇌ Vapour Which of the following relation is correct?

Which of the following statements is CORRECT for a reversible process in a state of equilibrium?

Using the Gibbs energy change, ΔG° = +63.3 kJ, for the following reaction. Ag₂CO₃(s) ⇌ 2Ag⁺(aq) + CO₃²⁻(aq); the Ksp of Ag₂CO₃ in water at 25°C is (R = 8.314 J K⁻¹ mol⁻¹)

For a given exothermic reaction, Kₚ and Kₚ' are the equilibrium constants at temperatures T₁ and T₂, respectively. Assuming that heat of reaction is constant in temperature range between T₁ and T₂, it is readily observed that

For the reaction, X₂O₄(l) → 2XO₂(g): ΔU = 2.1 kcal, ΔS = 20 cal K⁻¹ at 300 K. Hence, ΔG is ________.