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Define molecularity of a reaction, Illus...

Define molecularity of a reaction, Illustrate with an example.

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The number of reacting species (atoms, ions or molecules) taking parts in an elementary reaction, which must colloid simultaneously to bring about a chemical reaction is called molecularity of a reaction.
`NH_(4)NO_(2)to N_(2)+ 2H_(2)O` (Unimolecular)
`2HI to H_(2)+I_(2)` (Bimolecular)
`2NO+ O_(2)to 2NO_(2)` (Trimolecular)
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(A) Molecularity has no meaning for a complex reaction. (R ) The overall molecularity of a complex reaction is equal to the molecularity of the slow step.

VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-ELECTROCHEMISTRY & CHEMICAL KINETICS-VERY SHORT ANSWER QUESTIONS
  1. What are compelex reactions ? Name one complex reaction.

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  2. Give the units of rate constants for Zero, first order and second orde...

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  3. Define molecularity of a reaction, Illustrate with an example.

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  4. What is rate determining step in a complex reaction ?

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  5. Give the mechanism for the decomposition reacton of H(2)O(2) in alkali...

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  6. Write the equation relating [R], [R](0) and reaction time 't' for a z...

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  7. Drawn the graph that the concentration 'R', of the reactant and 't' th...

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  8. Give two examples for zero order reaction.

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  9. Write the intergrated equation for a fiest order reaction in terms of ...

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  10. Give two examples for gaseous first order reactions.

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  11. For the reaction A (g) to B(g) +C(g), write the intergrated rate equat...

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  12. What is half-life of a reaction? Illustrate your answer with an exampl...

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  13. Write the equation relating the half-life (t (1//2)) of a reaction and...

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  14. Write the equation useful to calculate half-life (t(1//2)) values for ...

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  15. What are pseudo first order reactions ? Give one example.

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  16. Write the Arrhenius equation for the rate constant (k) of a reaction.

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  17. By how many times the rate constant inhcreases for a rise of reaction ...

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  18. Explain the term 'activation energy' of a reaction with a suitable dia...

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  19. Write the equation which ralates th rate constants k(1)and k(2) at tem...

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  20. What is collision frequency (Z) of a reaction ? How is rate related to...

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