Trichloroethylene is produced in a two-step reaction sequence. Ethylene is first chlorinated to yield tetrachloroethane, which is dehydrochlorinated to form trichloroethylene.
(1) C2H4 (g) + 2 Cl2 (g) à C2H2Cl4 (l) + H2 (g) ΔÄ¤r°= -385.76 kJ/mol
(2) C2H2Cl4 (l) à C2HCl3 (l) + HCl (g)
The standard heat of formation of liquid trichloroethylene is -276.2 kJ/mol.
Use the given data and tabulated standard heats of formation of ethylene and hydrogen chloride to calculate the standard heat of formation of tetrachloroethane and the standard heat of reaction 2.
The question belongs to Chemistry and it discusses about calculating the heat of formation of tetrachloroethane. This has been discussed in the solution detail.
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