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Comment on the statement that the energy...

Comment on the statement that the energy of the universe remains constant but entropy of uniiverse is always increasing.

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The energy of the universe remains constant whereas entropy of the universe is continuously increasing. true/false

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A : The energy of the universe is constant, whereas the entropy of the universe is continuously increasing. R : For spontaneous process Delta S gt 0 .

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MODERN PUBLICATION-THERMODYNAMICS-Revision Exercise (Short Answer Questions)
  1. Explain the physical significance of entropy.

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  2. Predict the sign of DeltaS (positive or negative) for the following ch...

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  3. State giving reasons whether the entropy change for vaporisation of on...

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  4. What is entropy change?Predict the sign of entropy chsnge in each of t...

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  5. What is the value of free energy chnage for a reaction in equilibrium ...

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  6. Comment on the statement that the energy of the universe remains const...

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  7. Which of the reaction is expectd to be spontaneous at low temperatures...

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  8. Wha is menat by free energy of a system? How is it related to enthalpy...

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  9. State and explain Gibbs Helmholtz equation.

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  10. Predict or decrease of entropy : (a) Br(2)(g) to Br(g) (b) H(2)O(...

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  11. Predict the enthalpy change, free energy change and entropy change whe...

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  12. Define the terms: (i) Free energy (ii) Thermodynamic equilibrium ...

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  13. Neither the enthalpy change nor the entropy change alone can be used t...

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  14. Predict the sign of DeltaG for a reaction that is (a) Exothermic and...

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  15. What is Gibbs free energy change? Discuss its physical significance.

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  16. Explain the following: (a) The entropy of a substance increases on g...

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  17. How will you distinguish between the two? (i) Open and closed system...

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  18. What are spontaneous and non-spontaneous process? Under what condition...

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  19. What is free energy? How is it related to the spontaneity of a reactio...

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  20. Taking a specific example show that DeltaS("total") is the criterion f...

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