Five moles of an ideal gas at 1 bar and 298 K is expanded into vacuum to double the volume. The work done is :
Solution
As the expansion is done in vacuum that is in absence <br>of p<sub>ext</sub> so
p<sub>ext</sub> = 0
<br><br>$\therefore$ W = - p<sub>ext</sub>$\Delta$V
<br><br>= 0
About this question
Subject: Chemistry · Chapter: Thermodynamics · Topic: Zeroth and First Law
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