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State first law of thermodynamics.Write ...

State first law of thermodynamics.Write it mathematical expression.

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MODERN PUBLICATION-THERMODYNAMICS-Revision Exercise (Very short answer questions)
  1. What is meant by bond dissociation enthalpy?

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  2. Ammonia is prepared as 3H(2)(g) + N(2)(g) to 2NH(3)(g) What should...

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  3. State first law of thermodynamics.Write it mathematical expression.

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  4. Why are we usually concerned with changes in enthalpy than changes in ...

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  5. Name the two criteria which must be met for a process to be spontaneou...

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  6. Give an example of a chemical reaction for which DeltaH^(@) gt DeltaU^...

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  7. Why do we feel cold on touching a block of ice?

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  8. Delta(f)H^(@) of Fe(2)O(3) is -825 kJ. What is the enthalpy change for...

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  9. The standard enthalpies of formation of three substances A, B and C ar...

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  10. Define molar heat capacity and specific heat capacity.

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  11. What are the units of entropy and free energy?

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  12. Explain the state of a reaction when DeltaG =0.

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  13. Write Gibbs Helmholtz equation giving meanings of the symbols used.

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  14. What is the sign of DeltaS for (i) evaporation of liquid water ? (...

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  15. When an ideal gas expands in vaccum, there is neither absorption nor e...

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  16. In a process, a system does 145 J of work on its surroundings while 85...

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  17. How is free energy change related to equilibrium constant for the reac...

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  18. Predict DeltaS for the reaction : NH(3)(g) + HCI (g) to NH(4)CI(s).

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  19. Why does the entropy of a solid increase on melting?

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  20. What is the effect of temperature on entropy?

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