A thermodynamic system is taken from an original state D to an intermediate state E by the linear process shown in the figure. Its volume is then reduced to the original volume from E to F by an isobaric process. The total work done by the gas from D to E to F will be

Question

A thermodynamic system is taken from an original state D to an intermediate state E by the linear process shown in the figure. Its volume is then reduced to the original volume from E to F by an isobaric process. The total work done by the gas from D to E to F will be (A) -450 J (B) 450 J (C) 900 J (D) 1350 J

Tardigrade Admin · Accepted Answer

W DE =(1/2)(600+300) 3 J =1350 J W EF =-300 × 3=-900 J W DEF =450 J

Q. A thermodynamic system is taken from an original state $D$ to an intermediate state $E$ by the linear process shown in the figure. Its volume is then reduced to the original volume from $E$ to $F$ by an isobaric process. The total work done by the gas from $D$ to $E$ to $F$ will be

-450 J

450 J

900 J

1350 J

$W_{D E} = \frac{1}{2} (600 + 300) 3 J$
$= 1350 J$
$W_{EF} = - 300 \times 3 = - 900 J$
$W_{D EF} = 450 J$

Q. A thermodynamic system is taken from an original state D to an intermediate state E by the linear process shown in the figure. Its volume is then reduced to the original volume from E to F by an isobaric process. The total work done by the gas from D to E to F will be