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Define Hess's law of constant heat summa...

Define Hess's law of constant heat summation.

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PRADEEP-THERMODYNAMICS-SHORT ANSWER QUESTIONS
  1. Briefly explain the term 'standard heat of formation' . What is standa...

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  2. What is the basic difference between enthalpy of formation and enthalp...

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  3. Define Hess's law of constant heat summation.

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  4. Define the term 'bond enthalpy'.Why an average value is taken in the p...

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  5. What is meant by average bond energy? In what way is it different from...

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  6. Explain spontaneous and non-spontaneous processes.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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