Question

3. An ideal gas expands against a constant external
pressure of 2.0 atmosphere from 20 litre to 40 litre
and absorbs 10 kJ of heat from surrounding. What is
the change in internal energy of the system? (Given :
1 atm-litre = 101.3 J).
(a) 4052J (b) 5948 J (C). 14052 J (d) 9940 J.​

Answer 1

Answer:

Option B

∆E = q + w

q = +10Kj

w = -P∆V = 4.05Kj

∆E = 10 - 4.05 = 5.95KJ

5950KJ