(Zemansky uses ( W ) = work done BY system – careful): For isothermal reversible compression: [ W_\textby gas = nRT \ln\fracV_fV_i = 1 \cdot 8.314 \cdot 300 \cdot \ln\frac110 ] [ W_\textby gas = 2494.2 \cdot (-2.302585) = -5744 , \textJ ] Negative means work done on the gas.
The solution manual for "Heat and Thermodynamics" by Zemansky includes: solution manual heat and thermodynamics zemansky verified