Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEETChemistryThermodynamics (C)

What is the relationship between heat absorption and internal energy change at constant volume?

Options

  1. AThe heat absorbed by the system is equal to the change in internal energy of the system at constant volume.
  2. BThe heat absorbed by the system is greater than the change in internal energy of the system at constant volume
  3. CThe heat absorbed by the system is less than the change in internal energy of the system at constant volume.
  4. DThere is no relationship between heat absorption and internal energy change at constant volume.

Correct answer

A. The heat absorbed by the system is equal to the change in internal energy of the system at constant volume.

Step-by-step solution

At constant volume, the heat absorbed by the system is equal to the change in internal energy of the system. This is because there is no work done on the system

Practice Thermodynamics (C) on Quantrex Academy →

More from Thermodynamics (C)

A certain organic solvent has H _vap = 28.50 kJ mol ⁻¹ and S _vap = 88.2 J K ⁻¹ mol ⁻¹ at 1 bar. Calculate its normal boiling point (where G = 0 ). 2026Which of the following statements regarding spontaneous process is NOT true? 2026Calculate H for a reaction, 2X_ (g) + Y_ (g) 2Z_ (g) at 298 K if U = -10.5 kJ and R = 8.314 J K ⁻¹ mol ⁻¹ . 2026500 mL of nitrogen gas and 750 mL hydrogen gas were allowed to react at 1 bar pressure according to reaction, N _ 2(g) + 3 H _ 2(g) 2 NH _ 3(g) What is PV type of work done during 2026The relationship between H and U for the reaction, PCl ₃(g) + Cl ₂(g) PCl ₅(g) is given as 2026What would be the heat released in kJ when 450 cm ^3 of 0.02 M H ₂ SO ₄ is mixed with 650 cm ^3 of 0.1 M NaOH ? (Heat of neutralization of H ₂ SO ₄ and NaOH is -114 kJ/mol of H ₂ S 2026Identify from following reactions that it takes place with H = U . 2026Calculate the work done in the following reaction at 300 K , A (g) + B (g) = 2 C (g) [R = 8.314 JK ⁻¹ mol ⁻¹] 2026 Full Thermodynamics (C) list All NEET PYQs