The work done in erg for the reversible expansion of one mole of an ideal gas from a volume of 10 litres to 20 litres at 25°C is

Wrev=−2.303nRT logV2V1=−2.303×1×0.0821×298 log 2010=−2.303×0.0821×298×log 2 Latm or Wrev=−2.303×8.314×298×log 2J=−2.303×8.314×107×298×log 2    erg