Q.

When ethylene is heated with 1.5 moles  of oxygen the heat liberated is 702kJ. Enthalpy of combustion of ethylene is

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answer is 2.

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Detailed Solution

C2H4g+3O2g→ 2CO2g+2H2Ol;ΔH=?This equation represents  combustion of ethylene1.5 moles of O2when reacts with ethene liberates 702kJ3 moles of O2when reacts with ethene liberates _____ΔHcombustion=2(−702)=−1404kJ
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