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The change in enthalpy of a substqance w...

The change in enthalpy of a substqance when one mole of the substance is completely burnt in excess of air is called

A

Heat of sublimation

B

Heat of combustion

C

Heat of fusion

D

Both (1) & (2)

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The correct Answer is:
B
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AAKASH INSTITUTE-THERMODYNAMICS-SECTION-A
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  2. The change in enthalpy that takes place when one mole of the compound ...

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  3. The change in enthalpy of a substqance when one mole of the substance ...

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  4. Hess's law is used to determine

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  5. A system absorbs 300 cal of heat. The work done by the system is 200 c...

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  6. In an isothermal process

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  9. In a process, a system does 140 J of work on the surroundings and only...

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  10. A system absorbs 800 J of heat and system works equivalent to 900 J by...

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  11. 1 mole of an ideal gas undergoes an isothermal reversible expansion fo...

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  12. Which among the following represents standard enthalpy of formation?

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  13. Which one of the following equations does not correctly respresents th...

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  14. For an isothermal process

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  15. Heat change of a process, in which volume remains constant, is represe...

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  16. If the total enthalpy of reactants and products is H(R) and H(P) respe...

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  17. In which of the following change entropy decreases?

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  18. The value of entropy of the universe is always

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  19. A reaction occurs spontaneously in forward direction if

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  20. For an exothermic reaction to be spontaneous (DeltaS = negative)

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