if enthalpies of formation of C2H4, CO2,H20at 250C at 1 atm is 52,-394,-286KJ the enthapies of combustion of C2H4 will be

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if enthalpies of formation of C2H4, CO2,H20at 250C at 1 atm is 52,-394,-286KJ the enthapies of combustion of C2H4 will be

Sqskhi 26th Sep, 2020

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Shakti Swarupa Bhanja 26th Sep, 2020

Thanks A2A @bharwalsakshi !

The chemical equation becomes:-

C2H4(g)+3O2(g)-----> 2CO2(g)+2H2O(l)

Del(H)={Summation of del Hf of products}-{Summation of del Hf of reactants}

={(2*-394)+(2*-286)}-(52+0)

=(-788-572)-52 = -1412 kJ/mol

Hope this helps!

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