A) \[\Delta U=0\]
B) \[\operatorname{W}=Q\]
C) \[W=-RT\,\,In\,\,\frac{{{V}_{2}}}{{{V}_{1}}}\]
D) All of these
Correct Answer: D
Solution :
An isothermal process is a change of a system, in which the temperature remains constants. For isothermal process \[\Delta T=0\] Hence, \[\Delta U=0=Q\,\,-W\] \[\operatorname{Q}=W=-\,RT\,\,In\,\,\frac{{{V}_{2}}}{{{V}_{1}}}\]
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