C2H4 (g) +302 (g) → 2 CO2 (g) + 2H2O(1) AH = -1411.0 kJ 2C, H6 (9) + 702 (g) → 4 CO2(g) + 6H2O(1) 2H2 (9) + O2 (9) → 2H2O(1) AH = -3119.8 kJ AH = -571.7 kJ calculate A H for the reaction C2H4 (g) + H2(9) → C2H6 (g) ΔΗ= kJ

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".