Initially one mole of ideal gas `(C_(v)=(5)/(2)R)` at `0.1` atm and 300 K is put through the following cycle: Step-I : Heating to twice its initial pressure at constant volume. Step-II : Adiabatic expansion to its initial temperature. Step-III : Isothermal compression back to `1.00` atm. what is the volume at state X?
A
`40.4` L
B
`65.0` L
C
139 L
D
4.35 L
Text Solution
Verified by Experts
The correct Answer is:
C
`V_(1)=24.63 "L " T_(1)=300 K , T_(2)=600 K` For path (II) `T_(1)V_(1)^(gamma-1)=T_(2)V_(2)^(gamma-1)` `(T_(1))/(T_(2))=((V_(2))/(V_(1)))^(gamma-1)` `(600)/(300)=((V_(2))/(V_(1)))^((7)/(5)-1)` `(2)^(5//2)=(V_(2))/(V_(1))` `V_(2)=4sqrt(2)xx24.63 = 139.3 L~~ 139 L`
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