1 g H2 gas as STP is expanded so that volume is doubled. Hence, work done is
1.135 kJ
At STP 1 gr of H2 = 12 mole of H2, will occupy 11.2 lit
Thus if volume is doubled= V2 − V1 = 22.4 − 11.2 = 11.2 lit
W = p(V2 − V1) = 1 × 11.2 lit atm (1 lit atm = 101.33) = 1.135 kJ