Answer to Question #295975 in Molecular Physics | Thermodynamics for Manuel

Question

A gas on a piston cylinder has a constant pressure of 10 psig vacuum. The

piston undergoes expansion which makes the volume of the gas from 0.05 m3

to 0.10 m3. Calculate the non-flow work in kJ

Answer 1

Solution;

Given;

$P=10psig$

Hence;

$P=10+14.696=24.696psi$

Convert to Pascal's;

$P=170.27kPa$

$V_1=0.05m^3$

$V_2=0.10m^3$

Non flow work is;

$W=PdV$

$W=170.27(0.10-0.05)$

$W=8.5135kJ$