The heat of combustion of ethylene at 17C and at constant volume is -332.19 kcals. What is the value at constant pressure, given that water is in liquid state ?

1. -131.25 k cals

2. -412.23 k cals

3. -534.12 k cals

4. -333.35 k cals

Concept Videos :-

#4 | Heat
#26 | Entropy
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Concept Questions :-

Enthalpy and It's Type

The equation for combustion of C2H4 is

C2H4g+3O2g2CO2g+2H2Ol1 mole      3 moles     2 molesH=E+2nT=-332190+2×-2×273+17=-333350 cals=-333.35 k cals

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