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Neither the enthalpy change nor the entr...

Neither the enthalpy change nor the entropy change alone can be used to explai the spontaneity of a reaction.Explain.

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Entropy Change And Spontaneity

DeltaG is the net energy available to do useful work and is a measure of free energy. If a reaction has positive enthalpy change and positive entropy change, under what conditions will the reaction be spontaneous?

PRADEEP-THERMODYNAMICS-SHORT ANSWER QUESTIONS
  1. Explain spontaneous and non-spontaneous processes.

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  2. What is meant by enthalpy ? Can a decrease in enthalpy be the criterio...

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

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  4. What is entropy ? State the effect of increased temperature on the ent...

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  5. Explain the entropy concept and discuss the nature of change in entrop...

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  6. Correlate entropy and disorder with the help of fusion and vaporisatio...

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  7. What is Entropy ? What are the units of Entropy ? What is its signifi...

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  8. Giving suitable reasons, predict the sign of entropy change ( DeltaS)f...

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  9. Will entropy increase or decrease in the following changes and give re...

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  10. Predict whether entropy change in the following processes would be po...

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  11. Account for the fact that entropy of ice is less than that of water.

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  12. State whether the entropy of the system increases,decreases or remain...

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  13. How does T DeltaS determine the spontaneity of process?

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  14. Derive the criteria for predicting the spontaneity of a process in ter...

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  15. Give two statements for the second law of thermodynamics.

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

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  17. What do symbolsDeltaH, DeltaSandDeltaG signify ? How are they inter-re...

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  18. State Gibbs-Helmholtz equation and explain its use in predicting the s...

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  19. Explain the terms entropy and free energy.Entropy of a solid substance...

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  20. What is meant by free energy of a subtance ? Entropy of a solid subst...

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