C_(("graphite")) + H_2O_((g)) to CO_((g)) + H_(2(g)), DeltaH = +131.4 kJ. (Assume reaction occures at STP) How much energy is absorbed when one litre of hydrogen gas is formed at STP ?

C_(("graphite")) + H_2O_((g)) to CO_((g)) + H_(2(g)), DeltaH = +131.4

1.	C_(("graphite")) + H_2O_((g)) to CO_((g)) + H_(2(g)), DeltaH = +131.4 kJ. (Assume reaction occures at STP) How much energy is absorbed when one litre of hydrogen gas is formed at STP ?
Answer» Solution :The heat of REACTION, `Delta H = + 131.4kJ` It indicates that formation of one mole of hydrogen INVOLVE absorption of 131.4 kJ of heat. One mole gas at STP has a VOLUME of 22.4 L. Formation of 22.4 litre of hydrogen gas absorbs 131.4 kJ. Formation of one litre of hydrogen gas absorbs 5.87 kJ