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If enthaopy of hydrogenation of C(6)H(6)...

If enthaopy of hydrogenation of `C_(6)H_(6)(l)` into `C_(6)H_(12)(l)` is `-205kJ//mol` and resonance energy of `C_(6)H_(6)(l)` is `-152kJ//mol` then enthaopy of hydrogenation of

Assume `DeltaH_("vap")` of `C_(6)H_(6)(l),C_(6)H_(8)(l)` all equal :

A

`-"535.5 kJ/mol"`

B

`-"238 kJ/mol"`

C

`-"357 kJ/mol"`

D

`-"119 kJ/mol"`

Text Solution

Verified by Experts

The correct Answer is:
D
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Calculate the enthalpy of combustion of benzene (l) on the basis of the following data: a. Resonance energy of benzene (l) =- 152 kJ// mol b. Enthalpy of hydrogenation of cyclohexene (l) =- 119 kJ//mol c. Delta_(f)H^(Theta)C_(6)H_(12)(l) =- 156 kJ mol^(-1) d. Delta_(f)H^(Theta) of H_(2)O(l) =- 285.8 kJ mol^(-1) e. Delta_(f)H^(Theta)of CO_(2)(g) =- 393.5 kJ mol^(-1)

For the reaction , 2C_(2)H_(6)(g)+7O_(2)(g)rarr4CO_(2)(g)+6H_(2)O(l) , the rate of disappearnce of C_(2)H_(6)(g) :

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