Which of the following statements are correct?
A. When the system returns to its original condition, the overall change in a state function is zero.
B. When a gas expands, work energy is released, Hence, work done is negative and is done by the system.
C. 
In this 
zero, hence no work is done.
D. Work done for isothermal irreversible change is equal to 
E. No work is done during free expansion of an ideal gas.
Choose the correct answer from the options given below.
Text Solution
Verified by ExpertsB
Among the given statements, only A, B and E are correct while C and D are incorrect. Their
correct form are
• In the given reaction 
, i.e. 
, hence, work will be done.
• Work done for isothermal irreversible change is equal to 
.
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