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For the reaction 2HItoH(2)+I(2) the expr...

For the reaction `2HItoH_(2)+I_(2)` the expression `-1/2(d[HI])/(dt)` represents

A

The rate of formation of HI

B

The rate of disappearance of HI

C

The instantaneous rate of the reaction

D

The average rate of reaction

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The correct Answer is:
C
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AAKASH SERIES-CHEMICAL KINETICS-Objective Exercise - 4 (Assertion (A) & Reason (R) Type Questions)
  1. For the reaction 2HItoH(2)+I(2) the expression -1/2(d[HI])/(dt) repres...

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  2. (A) Spontaneous reaction may be slow or fast. (R ) Spontaneous natur...

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  3. A: Rate of reaction increases with increasse in concentration of react...

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  4. A: Hydrolysis of an ester is a slow reaction R: Reactions between co...

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  5. (A) All collisions lead to chemical reaction (R ) All molecules brin...

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  6. A: Order of reaction is evaluated from the mechanism of a reaction ...

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  7. A: A catalyst increases the rate of a reaction. R: In presence of a ...

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  8. (A) The rate of the reaction is the rate of change of concentration of...

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  9. (A ) If in a zero order reaction, the concentration of the reactant is...

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  10. (A) The addition of catalyst lowers the activation barrier, yet there ...

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  11. (A) In a multiple reaction, the rate determining step is the fast step...

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  12. (A) Half-life period of a reaction of first order is independent of in...

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  13. (A) Order of recation is related to molecularity of reaction (R ) Mo...

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  14. (A) The rate law equation can be found only by experiment. (R ) Rate...

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  15. (A) Reactions of higher order are rare (R ) The chances of multimole...

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  16. (A) Rate of reaction increases with increase in temperature. (R ) Nu...

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  17. (A) The mass of the products formed in a reaction depends upon the lim...

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  18. (A) Order with respect to any reactant or product can be zero or posit...

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  19. (A) The rections 2NO+O(2) to 2NO(2) and 2CO+O(2) to 2CO(2), proceed at...

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  20. (A) Hydrolysis of ethyl acetate in presence of acid is a reaction of f...

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  21. (A) The rate of reaction is always negative. (R ) Minus sign used in...

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