Calculate the enthalpy of combustion of ethene, C2H C2H4 (g) + O2 (g) CO2 (g) + H2O (g) Table 1. Bond Energies of Selected Bonds. Bond Bond Energy (KJ/mol.) C-H 413 C=C 614 O=O in O2 498 C=O in CO2 799 O-H 467 947 KJ O -1494 KJ O 3196 KJ O - 2266 KJ

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Environmental pollution occurs due to some unwanted alteration in the surroundings which results in unfavorable effects on all organisms of that surrounding.