Chemistry

Chemistry

Problem

A closed system of gas expands isobarically from an initial volume ViV_i to a final volume VfV_f under a constant external pressure PextP_{\text{ext}}. Which expression gives the work WW done on the gas during this process? a) Pext(Vf−Vi)P_{\text{ext}}(V_f-V_i) b) −12Pext(Vf−Vi)-\dfrac{1}{2}P_{\text{ext}}(V_f-V_i) c) −Pext(Vf−Vi)-P_{\text{ext}}(V_f-V_i) d) −PextViln⁡ ⁣(VfVi)-P_{\text{ext}}V_i\ln\!\left(\dfrac{V_f}{V_i}\right)

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