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What is meant by the term 'free energy'?...

What is meant by the term 'free energy'? What was the necessity of introducing such a function ?

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ICSE-CHEMICAL THERMODYNAMICS -SHORT ANSWER TYPE QUESTIONS
  1. State and explain the second law of thermodynamics.

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  2. State a chemical reaction in which DeltaH and DeltaU are equal.

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  3. What is meant by the term 'free energy'? What was the necessity of int...

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  4. Define enthalpy and enthalpy change. Show that DeltaH = qp.

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  5. What is the free energy criterion for a process to occur spontaneously...

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  6. Explain the term 'entropy'.

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  7. State giving reason whether the following reaction would involve an in...

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  8. What do you understand by a spontaneous process ? Give two examples

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  9. What do you understand by the spontaneity of a process ? Discuss the s...

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  10. Can DeltaH be regarded as the sole criterion to explain the spontaneit...

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  11. With the help of at least two examples show that randomness increases ...

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  12. What is entropy and in what units is it expressed ? Discuss the physic...

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  13. For the reaction 2H(g)rarr H(2)(g), the sign of DeltaH and DeltaS resp...

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  14. What happens to the entropy when a gas undergoes expansion ? Explain.

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  15. Is the entropy of the universe constant ?

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  16. State and explain the second law of thermodynamics. Mention the essent...

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  17. Show that the entropy changes in a reversible isothermal process is ze...

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  18. Show that the entropy change in an irreversible process is always posi...

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  19. Define 'entropy of fusion' and 'entropy of vapourisation and write exp...

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  20. State and explain the second law of thermodynamics.

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