Answer:
-3197 kj
Step-by-step explanation:
Chemical equation:
C₂H₄ + O₂ → CO₂ + H₂O ΔH = -1390 KJ
Balanced chemical equation:
C₂H₄ + 3O₂ → 2CO₂ + 2H₂O ΔH = -1390 KJ
It can be seen in equation that one mole of C₂H₄ react with 3 mole of oxygen and produced 1390 kj energy.
When 2.3 moles C₂H₄ react the energy produced is,
1 mole = -1390 KJ
2.3 mol × -1390 KJ/ 1mol = -3197 kj
The given reaction is combustion reaction of hydrocarbon. when hydrocarbons burn in the presence of oxygen carbon dioxide and water are produced.
In given reaction 1 mole of ethylene react with 3 moles of oxygen and produced 2 moles of CO₂ and 2 moles of water.