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Heats of hydrogenation of benzene and cy...

Heats of hydrogenation of benzene and cyclohexane are -49.8 and -28.6 `kcal *mol^(-1)` respectively.
Determine the resonance energy of benzene.

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If the calculated and the experimental heats of combustion of benzene are 824.1 and 789.1 kcal *mol^(-1) respectively, then calculate the value of resonance energy of benzene.

At 25^(@)C , standard enthalpy of combustion of combustion of hydrogen, cyclohexene (C_(6)H_(10)) and cyclohexane (C_(6)H_(12)) are -241, -3800 and -3920 " kj mol"^(-1) respectively. Determine the heat of hydrogenation of cyclohexene.

Heat of combustion of benzene is x J * mol^(-1) . Heat of formation of carbon dioxide and water are y J * mol^(-1) and z J * mol^(-1) respectively . Calculate the heat of formation of benzene .

The heats of combustion of carbon and carbon monoxide are -393.5 and -283.5 kJ*mol^(-1) respectively. The heat of formation (in kJ) of carbon monoxide per mole is-

Heat of combustion of benzene is xJ *mol^(-1) . Heat of formation of carbon dioxide and water are yJ*mol^(-1) and zJ*mol^(-1) respectively. Calculate the heat of formation of benzene.

At 25^(@)C temperature, the heat of combustion of sucrose, carbon and hydrogen are -5644 kJ*mol^(-1),-393.5kJ*mol^(_1) & -285.8kJ*mol^(-1) respectively. Determine the heat of formation of sucrose at 25^(@)C .

The enthalpy of hydrogenation of cyclohexane is -119.5 kj*mol ^(-1) . If resonance energy of benzene is -150.4 kJ*mol^(-1) , estimate its enthalpy of hydrogenation.

The standard molar heat of formation of ethane, carbon dioxide and liquid water are -21.1, -94.1 and -68.3 kcal respectively. Calculate the standard molar heat of combustion of ethane.

CHHAYA PUBLICATION-HYDROCARBONS-(QUESTION-ANSWER ZONE FOR BOARD EXAMINATION (Short answer type)
  1. Explain why nitrobenzene (C6H5-NO2) is used as a solvent in the Friede...

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  2. Are all the six carbon -carbon bonds of benzene molecule equal in leng...

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  3. Heats of hydrogenation of benzene and cyclohexane are -49.8 and -28.6 ...

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  4. Activating groups are ortho-/para-directing ,while the deactivating gr...

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  5. How will you remove traces of aniline present in benzene ?

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  6. How can traces of phenol present in a sample of benzene be removed ?

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  7. Why groups like -CHO,-NO2,-B(OR)3,-overset(oplus)PBr3 and -overset(opl...

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  8. Arrange the compounds in increasing order of their rate of nitration a...

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  9. How will you distinguish between benzene and hexane by a simple test i...

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  10. Aniline does not undergo Friedel-Crafts reaction, though it contains a...

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  11. A mixture of benzene and bromine solution remains unchanged for indefi...

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  12. How many trisubstituted benzene may be obtained from o-,m-and p-chloro...

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  13. 1 C5H(12) and 2 C8 H(18) are two alkanes which form one monochloride e...

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  14. How can you convert methyl acetylene to acetone ?

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  15. Write the monosubstituted compounds formed in each of the following r...

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  16. Write the monosubstituted compounds formed in each of the following r...

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  17. Write the monosubstituted compounds formed in each of the following r...

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  18. Write the monosubstituted compounds formed in each of the following r...

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  19. Write the monosubstituted compounds formed in each of the following r...

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  20. Write the monosubstituted compounds formed in each of the following r...

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