Thermodynamics questions
1906 published questions with worked solutions.
- Two cylinders A and B of equal capacity are connected to each other via a stop cock. A contains an ideal gas at standard...
- Gas 'A' undergoes change from state 'X' to state 'Y'. In this process, the heat absorbed and work done by the gas is 10 J and 18...
- A vessel contains 0.15 m³ of a gas at pressure 8 bar and temperature 140°C with c_p = 3R and c_v = 2R. It is expanded...
- Consider the following data: (i) 2Al(s) + 6HCl(aq) → Al₂Cl₆(aq) + 3H₂(g), ΔH = −1200 kJ/mol (ii) H₂(g) + Cl₂(g) → 2HCl(g), ΔH =...
- At the transition temperature T, A ⇌ B and ΔG° = 105 − 35logT where A and B are two states of substance X. The transition...
- If 3.365 g of ethanol (l) is burnt completely in a bomb calorimeter at 298.15 K, the heat produced is 99.472 kJ. The |ΔH_f°| of...
- For the following reaction at 50°C and at 2 atm pressure, 2N₂O₅(g) ⇌ 2N₂O₄(g) + O₂(g), N₂O₅ is 50% dissociated. The magnitude of...
- Consider the following data for the reaction X₂(g)+Y₂(g)⇌2XY(g) at 600 K. | Compound | ΔfH°₆₀₀K (kJ mol⁻¹) | S°₆₀₀K (J mol⁻¹K⁻¹)...
- The correct order of molar heat capacities measured at 298 K and 1 bar is:
- A cylinder with adiabatic walls is closed at both ends and is divided into two compartments by a frictionless adiabatic piston....
- In a closed flask at 600 K, one mole of X₂Y₄(g) attains equilibrium as given below: X₂Y₄(g)⇌2XY₂(g). At equilibrium, 75% X₂Y₄(g)...
- A certain gas is isothermally compressed to (1/3)ʳᵈ of its initial volume (V₀=3 litre) by applying required pressure. If the bulk...
- Consider the reaction X⇌Y at 300 K. If ΔH° and K are 28.40 kJ mol⁻¹ and 1.8×10⁻⁷ at the same temperature, then the magnitude of...
- Consider the reaction 2H₂S(g) + 3O₂(g) → 2H₂O(l) + 2SO₂(g). The magnitude of enthalpy change for the reaction in kJ mol⁻¹ is...
- A Carnot engine has an efficiency of 50% when its source is at a temperature 327^ . The temperature of the sink is :
- The stability of Cu^ 2+ is more than Cu^ + salts in aqueous solution due to :
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A : In equation...
- Which amongst the following options is the correct relation between change in enthalpy and change in internal energy?
- The correct sequence of bond enthalpy of 'C-X' bond is :
- Which one among the following is the correct option for right relationship between C_P and C_V for one mole of ideal gas?
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