The work done in ergs for the reversible expansion of one mole of an ideal gas from a volume of 10 litres to 20 litres at is
(a) 2.303 x 298 x 0.082 log2
(b) 298 x 107 x 8.31 x 2.303 log2
(c) 2.303 x 298 x 0.082 log2 0.5
(d) 8.31 x 107 x 298 - 2.303 log 0.5
