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CGP EDU Academic Team
Published on: August 14, 2026
A vessel contains 100 liters of a liquid X. Heat is supplied to the liquid in such a fashion that, Heat given = change in enthalpy. The volume of the liquid increases by 2 liters. If the external pressure is one atm, and 202.6 Joules of heat were supplied then, [U - total internal energy]
A
U = 0, 
H = 0
B
U = + 202. 6J, 
H = + 202.6 J
C
U = – 202.6J, 
H = – 202.6J
D
U = 0, 
H = + 202.6J
Text Solution
Verified by ExpertsThe correct answer is:
D
H = heat given. So, process is isobaric.
w = – P ext ( 
V) = – 1 × 2 litre.atm = – 202.6 J
Hence, q = 202.6 J = 
H. and 
E = q + w = 0.
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