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In a multi-step reaction, the rate is de...

In a multi-step reaction, the rate is determined by conisdering the………….step.

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slowest
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The rate law expresison is given for a typical reaction, n_(1)A + n_(2) B rarrP as r = k[A]^(n)[B]^(n2) . The reaction completes only in one step and A and B are present in the solution. If the reaction occurs in more than one step, then the rate law is expressed by consdering the slowest step, i.e., for S_(N)l reaction r = k[RX] . If the eraction occurs in more than one step and the rates of the steps involved are comparable, then steady state approximation is conisdered, i.e., the rate of formation of intermediate is always equal to the rate of decompoistion of the intermediate. Conisder the reaction: [[I_(2) underset(k_(1))overset(k_(2))hArr2I("rapid equilibrium")],[H_(2)+2I overset(k_(3))rarr 2HI("slow")]] If we increase the concentration of I_(2) two times, then the rate of formation of HI will

The rate law expresison is given for a typical reaction, n_(1)A + n_(2) B rarrP as r = k[A]^(n)[B]^(n2) . The reaction completes only in one step and A and B are present in the solution. If the reaction occurs in more than one step, then the rate law is expressed by consdering the slowest step, i.e., for S_(N)l reaction r = k[RX] . If the eraction occurs in more than one step and the rates of the steps involved are comparable, then steady state approximation is conisdered, i.e., the rate of formation of intermediate is always equal to the rate of decompoistion of the intermediate. Conisder the reaction: [[I_(2) underset(k_(1))overset(k_(2))hArr2I("rapid equilibrium")],[H_(2)+2I overset(k_(3))rarr 2HI("slow")]] Which of the following expresison is correct?

The rate of reaction is determined by slow step reaction. The step is called

What is the rate determining step of a reaction ?

In the rate-limiting approximation for a two-step reaction, the overall rate of the reaction is always equal to the rate of the ……….. Step in the reaction mechanism.

Consider the statements for given reaction 1. In the first step, there is breaking of C - O bond 2. The second step is S_(N)2 reaction 3. There is retention of configuration in the first step 4. There is inversion of configuration in the second step

Consider the following reaction to answer the next three questions: In the above reaction. The reactive intermediate formed in the first step(step-i) is

CENGAGE CHEMISTRY-CHEMICAL KINETICS-Exercises Fill In The Blanks
  1. The half-change time for a first order reaction is 20 min hence the ra...

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  2. For a first order reaction, t(1//2) = underset(k)ul(...........).

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  3. For a first order reaction, A rarr B, the rate = k xx…………. .

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  4. The unit of first order rate constant is ………….. .

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  5. The unit of first order rate constant when concentration is measured i...

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  6. ……………………… reaction obeys the expresison t(1//2) = 1//ka in chemical ki...

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  7. The half-life periof of a first order reaction is…………..of initial conc...

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  8. A first order reaction has t(1//2) = 6.93 min. The rate constant is………...

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  9. The rate first order reaction is 2.4 xx 10^(-3) mol L^(-1) s^(-1), whe...

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  10. The rate of a second order reaction is 6 xx 10^(-5) mol L^(-1) s^(-1),...

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  11. The temperature coefficient of a reaction is determined by comparing v...

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  12. The value of temperatuer coefficient is usually………………. .

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  13. The reactions having low activation energy are……………reactions.

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  14. Activation energy = threshold energy -…………….. .

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  15. Increases in temeprature increases the number of ……………..colliisons.

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  16. In a multi-step reaction, the rate is determined by conisdering the………...

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  17. Molecularity is always a whole…………… while the order of reaction may be...

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  18. All radioactive decompoistion reactions are…………..order reactions.

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  19. The inverison of cane sugar is a……………reaction though its molecularity ...

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  20. The difference of energy between activated complex and that of the rea...

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