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With example explain the term 'Heat of t...

With example explain the term 'Heat of transition'.

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Heat of transition is the change in enthalpy produced, when one mole of one allotropic form of an element is converted into another allotropic form.
Example : `"C(diamond)" rarr "C(graphite)", Delta H = -x_(1)kJ` when 1 mole of diamond is converted into graphite, `x_(1) kJ` of heat is liberated `- x_(1) kJ` is the heat of transition in this case.
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SUBHASH PUBLICATION-CHEMICAL THERMODYNAMICS-Two marks questions and answers :
  1. Write the relation between Delta H and Delta U.

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  2. Explain heat of neutralisation with an example.

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  3. With example explain the term 'Heat of transition'.

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  4. Define heat (enthalpy) of transition.

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  5. What do you understand by the following statements ? enthalphy of fo...

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  6. What do you understand by the following statements ? enthalpy of com...

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  7. Give an example for the relation between Delta H and Delta U.

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  8. What are exothermic and endothermic chemical reactions?

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  9. State and explain the first law of thermochemistry.

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  10. Explain standard enthalpy of reaction.

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  11. Explain standard enthalpy of subslimation [Delta("sub")H^(@)).

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  12. Explain standard enthalpy of formation (Delta(f)H^(@)).

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  13. Explain standard enthalpy of combustion (Delta(c )H^(@)).

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  14. Explain bond dissociation enthalpy.

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  15. Justify the following statements : An exothermic reaction is alway...

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  16. Justify the following statements : The entropy of a substance incre...

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  17. Evaporation of water is an endothermic process but spontaneous. Explai...

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  18. Explain standard enthalpy of solution (Delta(sol)H^(@)).

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  19. At a certain temperature 'T', endothermic reaction A rarr B proceeds v...

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  20. Explain standard enthalpy of atomisation (Delta(s)H^(@))

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