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Define and explain the standard enthalpy...

Define and explain the standard enthalpy of vapourisation (Molar enthalpy of vapourisation).

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Standard molar enthalpy of fusion `(triangle_("fus") H^@):` The enthalpy change that accompanies melting of one mole of a soild substance in standard state is called Standard molar enthalpy of fusion.
`Eg: H_(2)O_(l) to H_(2)O_(g) " "triangle_("vap") H^(0)=+"40.79 KJ mol"^(-1)`
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-THERMODYNAMICS-Short Answer Questions
  1. What is the standard enthalpy of formation? Explain it with example.

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  2. Define and explain enthalpy of phase transformation.

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  3. Define and explain the standard enthalpy of vapourisation (Molar entha...

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  4. Define and explain the standard enthalpy of vapourisation (Molar entha...

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  5. Define and explain the standard enthalpy of vapourisation of sublimati...

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  6. Define and explain the standard enthalpy of formation (Delta(r)H^(thet...

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  7. State and explain the Hess's law of constant heat summation.

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  8. Define and explain the enthalpy of combustion (Delta(c)H^(theta)).

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  9. Define and explain the enthalpy of atomisation(Delta(a)H^(theta)).

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  10. Define and explain the bond enthalpy (Delta("bond")H^(theta)).

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

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

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  13. Define ionisation enthalpy and electron affinity.

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  14. Explain the spontaneity of a process.

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

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  16. What is entropy? Explain with examples.

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

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

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

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

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