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Define heat of solution (Delta("sol")H^(...

Define heat of solution `(Delta_("sol")H^(theta))` and heat of dilution.

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i) Enthalpy of solution : Definition: The amount of heat evolved or absorbed when 1 mole of a solute is dissolved completely in large excess of solvent is called Enthalpy of solution.
(or)
The change of enthalpy when a solution containing 1 mole of a solute is diluted from one concentration to another.
Ex : `KCl (s) +aq to KCl (aq) DH=+19.75kJ`
(ii) Enthalpy of dilution: The change of enthalpy when a solution containing 1 mole of a solute is diluted from one concentration to another.
`Ex : HCl_(g) +aq to HCl_(aq) triangleH=-75.4kJ`
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-THERMODYNAMICS-Short Answer Questions
  1. Define and explain the bond enthalpy (Delta("bond")H^(theta)).

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  2. What is the bond enthalpy of C-H bond of CH(4)?

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  3. Define heat of solution (Delta("sol")H^(theta)) and heat of dilution.

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  4. Define ionisation enthalpy and electron affinity.

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  5. Explain the spontaneity of a process.

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  6. Is decrease in enthalpy a criterion for spontaneity? Explain.

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  7. What is entropy? Explain with examples.

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  8. Is increases in entropy a criterion for spontaneity? Explain.

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  9. Can DeltaU and DeltaS discriminate between irreversible and reversible...

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  10. In which of the following process entropy increases? a) A liquid ev...

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  11. For the oxidation of iron 4Fc((s))+3O(2(g))to2Fe((2))O(3(s)), the ...

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  12. Which formulate in the following are correct? a) G=H-TS b) DeltaG(...

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  13. Calculate Delta(r)G^(theta) for conversion of oxygen to ozone (3)/(2)O...

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  14. State the second law of thermodynamics and explain it.

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  15. State the third law of thermodynamics.

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  16. What is entropy? Explain with examples.

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  17. Explain spontaneity of a process in terms of Gibbs energy.

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  18. The sign and magnitude of Gibbs energy change of a chemical process te...

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  19. In a process 701 J of heat is absorbed by a system and 394 J of work i...

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  20. The reaction of cyanamide (s), with dioxygen was carried out in a bomb...

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