Q 1123591441.     Calculate enthalpy for formation of ethylene from the following data:

I) `C(grap hite)+O_(2) rarr CO_(2) (g) Delta H=-393.5KJ`

II)`H_(2)(g) +1/(2)O_(2)(g)rarrH_(2)O(l) DeltaH=-286.2KJ`

III)`C_(2)H_(4)(g)+3O_(2)(g)rarr2CO_(2)(g)+2H_(2)(O)(l)DeltaH=-1410.8KJ`

EAMCET 2007
A

`54.1KJ`

B

`51.4KJ`

C

` 44.8 KJ`

D

`48.4 KJ`

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