CHEM 1201 Chapter : Chapter 5 Page 89
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Note that the thermochemical reaction equation for the above process is: f11 ()jf. Co2(g) + 2 h20(l); sn = ~o kj. The enthalpy change during the combustion of one mole of methane is -890 k] . 3 colg) + 6 h20(i) _. ,. 3 chig) + 6 dig: hydrazine, n2h4j reacts with oxygen gas to yield nitrogen gas and liquid water. The reaction of2. 50 g of n2h4 evolves 48. 5 kj of heat. Calculate the enthalpy change per one mole of hydrazine combusted. Answers: la) 742 u. i -742 kjj 2) 2671 kj,3)
