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Change in enthalpy and change in interna...

Change in enthalpy and change in internal energy are state functions. The value of `DeltaH, DeltaU` can be determined by using Kirchoff's equation.
Calculate the heat of formation of methane, given that heat of formation of water `= -286kJ mol^(-1)`, heat of combustion of methane `= -890kJ mol^(-1)` heat of combustion of carbon `= -393.5 kJ mol^(-1)`

A

`90.5 kJ mol^(-1)`

B

`-240 kJ mol^(-1)`

C

`-75.5kJ mol^(-1)`

D

`95.6 kJmol^(-1)`

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-CHEMICAL THERMODYNAMICS-Lecture Sheet- Exercise-II
  1. If S + O(2) rarr SO(2), DeltaH= -398.2kJ SO(2) + (1)/(2) O(2) rarr S...

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  2. Given C((s)) + O(2(g)) rarr CO(2(g)), Delta H = -395 kJ , S((g)) + O(2...

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  3. The standard heat of formation of sodium ions in aqueous solution from...

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  4. The standard enthalpy of formation (Delta H^(0)) at 298K for methane, ...

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  5. When 50 cm^(3) of 0.2N H(2)SO(4) is mixed with 50cm^(3) of 1N KOH, the...

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  6. Given that the data for neutralization of a weak acid (HA) and strong ...

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  7. When 1.0g of oxalic acid (H(2)C(2)O(4)) is burned in a bomb calorimete...

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  8. Consider the following data: Delta(f) H^(2) (N(2)H(4), l) =50kJ//mol...

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  9. What is the bond enthalpy of Xe-F bond? XeF(4)(g) rarr Xe^(+) (g) + F^...

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  10. Change in enthalpy and change in internal energy are state functions. ...

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  11. Change in enthalpy and change in internal energy are state functions. ...

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  12. Change in enthalpy and change in internal energy are state functions. ...

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  13. The bond dissociation energy depends upon the nature of the bond and n...

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  14. The bond dissociation energy depends upon the nature of the bond and n...

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  15. The bond dissociation energy depends upon the nature of the bond and n...

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  16. Match the following columns

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  17. What is the resonance energy of Benzene in the same units?

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  18. The standard molar enthalpies of formation of cyclohexane (l) and benz...

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  19. Estimate the average S-F bond energy in SF(6). The value of standard e...

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  20. Compute the heat of formation of liquid methyl alcohol in kilojoules p...

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