Reproduced here is the PV diagram for a gas expanding in two ways, isother-mally

Question

Reproduced here is the PV diagram for a gas expanding in two ways, isother-mally and adiabatically. The initial volume V_A was the same in each case, and the final volumes were the same (V_B = V_C). In which process was more work done by the gas? Isothermal Adiabatic Same work is done by both In an engine, 0.25 mol of an ideal monatomic gas in the cylinder expands rapidly and adiabatically against the piston. In the process, the temperature of the gas drops from 1150 K to 400 K. How much work does the gas do? minus2100 J minus100 J 0 J 100 J 2300 J

Explanation / Answer

work done = area covered by pv graph

process A to B is covering more area so,

Isothermal process is doing more work

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