Question
An ideal gas expands in volume from 1×10-3 m3 to 1×10-2 m3 at 300 K against a constant pressure of 1×105 Nm-2. The work done is
-
-900 J
-
900 J
-
2780 J
-
-2780 J
Solution
A.
-900 J
Work done due to change in volume against constant pressure is
W = - p(V2-V1)
= - 1 x 105 Nm-2 (1 x 10-2- 1 x 10-3)m3
