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Basanti Karpe
Asked: 2022-11-10T03:14:45+05:30 In:

If the heats of formation of `C_(2)H_(2)` and `C_(6)H_(6)` are `230 kJ mol^(-1)` and `85 kJ mol^(-1)` respectively, the `DeltaH` value for the trimerisation of `C_(2)H_(2)` is
A. `-605 kJ`
B. `-205 kJ`
C. `205 kJ`
D. `605 kJ`

If the heats of formation of `C_(2)H_(2)` and `C_(6)H_(6)` are `230 kJ mol^(-1)` and `85 kJ mol^(-1)` respectively, the `DeltaH` value for the trimerisation of `C_(2)H_(2)` is
A. `-605 kJ`
B. `-205 kJ`
C. `205 kJ`
D. `605 kJ`
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1 Answer

  1. Correct Answer – A
    `3C_(2)H_(2) rarr C_(6)H_(6) , DeltaH=H_(P)-H_(R)`

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