Heat energy of 830 J is needed to raise the temperature of 4 moles of an ideal gas by 5 K at constant pressure. How much heat energy is needed to raise the temperature of the same amount of gas by 5 K

Question

Heat energy of 830 J is needed to raise the temperature of 4 moles of an ideal gas by 5 K at constant pressure. How much heat energy is needed to raise the temperature of the same amount of gas by 5 K at constant volume? (R = 8.3 J/K-mol)

TestHub · Accepted Answer

C p = 830/(4 × 5) = 41.5 J/K-mol, so C v = 41.5 - 8.3 = 33.2 J/K-mol. q v = 4 × 33.2 × 5 = 664 J. Matches (b).

Chemistry - Thermodynamics - I Question with Solution | TestHub

Options:

Doubts & Discussion