-->

Thermodynamics

Question
CBSEENCH11006142

Calculate the maximum work obtained when 0.75 mol of an ideal gas expands isothermally and reversibly at 27°C from a volume of 15L to 25L.

Solution

We have given,
Volume (V2) = 25L
Volume (V1) =15L
Number of moles =0.75
using the equation,
straight W space equals 2.303 space nRT space log space straight V subscript 2 over straight V subscript 1
Substituting the values, we have,
straight W space equals space 2.303 space cross times space 0.75 space cross times space 8.314 space cross times space 300 space log space 25 over 15
space space space space equals 955.5 space straight J