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Explain standard enthalpy of atomisation...

Explain standard enthalpy of atomisation `(Delta_(s)H^(@))`

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It is defined as the enthalpy change accompanying the dissociation of one mole of the substance completely into its atoms in the gasous state.
Example : `H_(2(g)) rarr 2H_((g)) , Delta_(s)H^(@) = 435.4 kJ mol^(-1)`.
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SUBHASH PUBLICATION-CHEMICAL THERMODYNAMICS-Two marks questions and answers :
  1. Explain standard enthalpy of solution (Delta(sol)H^(@)).

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  2. At a certain temperature 'T', endothermic reaction A rarr B proceeds v...

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  3. Explain standard enthalpy of atomisation (Delta(s)H^(@))

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  4. Explain with the help of an example, the difference between bond disso...

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  5. What is meant by free energy of a system ? What will be the direction ...

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  6. Why most of the exothermic process (reaction) are spontaneous ?

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  7. The enthalpy of combustion of sulphur is 297 kJ. Write the thermochemi...

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  8. What is the most important condition for a process to be reversible in...

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  9. Why the absolute value of enthalpy cannot be determined ?

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  10. What are the applications of Hess's Law of constant heat summation?

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  11. Explain standard enthalpy of dilution.

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  12. Define Molar enthalpy of fusion.

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  13. Define Molar enthalpy of vapourisation ?

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  14. Define : (a) Enthalpy of atomization (b) Lactic enthalpy.

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  15. Explain Laplace-Lavoisier law.

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  16. If the enthalpy of combustion of diamond and graphite are -395.4kJ mol...

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  17. H(2)(g) + (1)/(2)O(2)(g) rarr H(2)O(g) Delta H = -242 kJ mol^(-1). Bon...

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  18. What is a spontaneous process ? Give an example.

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  19. Define a non-spontaneous process.

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  20. Explain standard enthalpy of ionization.

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