Answer to Question #224702 in General Chemistry for DANI

Question

1)Consider an ideal gas that occupies 1000 mL at a pressure of 2.00 bar. If the gas is compressed

isothermally at a constant external pressure, Pext so that the final volume is 0.500 dm3

, what is the

smallest value Pext can have? Calculate the work involved using this value of Pext.�

Answer 1

P₁V₁=P₂V₂

1*2=0.5V₂

V₂=4bars

W_ext=-P_ext$\Delta$ V

=(-4/760)*(1-0.5)*101.325

=-0.26666J*100

=-26.666J