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Q 2676156976.     Determine the enthalpy of the reaction,
`C_3H_8(g)+ H_2(g ) -> C_2H_6 (g) + CH_4(g)`. at ` 25^oC` using
the given heat of combustion values under standard conditions.
Compound: `H_2(g) \ \ CH_4(g) \ \ C_2H_6(g) \ \ C`(graphitc)

`Delta H^o` (kJ/mol): `-285 8 \ \ \ 890.0 \ \ \ -1560.0 \ \ \ \ -303.0`

The standard heat of formation of `C_3H_8(g )` is `-103 kJ //mol`.

JEE 1992

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