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Standard enthaies of combustion for H(2)...

Standard enthaies of combustion for `H_(2) (g), CO(G), CH_(4) (g)`, and `C_(6) H_(12) O_(6) (s)` are -258, - 283, - 890, and `- 2802 kJ mol^(-1)`, respectively. Which of the following has minimum colorific value?

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The heat of combustion of CH_(4)(g), C_(2)H_(6)(g) and H_(2)(g) are -890.3, -1559,7 and -285.9 kJ mol^(-1) , respectively. Which of these fuels is most efficient?

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The heats of combustion of CH_(4)(g) and C_(2)H_(6)(g) are -890.3 and -150kJ mol^(-1) respectively. Which has higher calorific value?

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Heat of combustion of CH_(4),C_(2)H_(4),C_(2)H_(6) are -890,-1411 and -1560 kJ //mol respectively. Which has the lowest calorific fuel value ?

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Delta H_("combustion") of C _(6) H _(6) (l) . C(s) and H _(2) (g) are - 3000 kJ ,-390KJ mol^(-1) and - 290 kJ mol ^(-1) respectively. Hence heat of formation of benzene, is