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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Why does the rate of any reaction generally decreases during the course of the reaction?

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प्रश्न

Why does the rate of any reaction generally decreases during the course of the reaction?

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उत्तर

The rate of a reaction depends on the concentration of reactants. As the reaction progresses, the concentration of reactants decreases because the reactants start getting converted to products. Hence the rate decreases.

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पाठ 4: Chemical Kinetics - Exercises [पृष्ठ ५६]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 4 Chemical Kinetics
Exercises | Q III. 47. | पृष्ठ ५६

संबंधित प्रश्‍न

A → B is a first order reaction with rate 6.6 × 10-5m-s-1. When [A] is 0.6m, rate constant of the reaction is

  • 1.1 × 10-5s-1
  • 1.1 × 10-4s-1
  • 9 × 10-5s-1
  • 9 × 10-4s-1

For a reaction A + B ⟶ P, the rate is given by

Rate = k [A] [B]2

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(i) Write the order and molecularity of this reaction.

(ii) Write the unit of k.


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(i) Predict the order of the reaction.

(ii) What is the slope of the curve?

(iii) Write the unit of rate constant for this reaction.


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(i) What is the order of the reaction?

(ii) What is the slope of the curve?

(iii) What are the units of rate constant?


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For a chemical reaction starting with some initial concentration of reactant At as a function of time (t) is given by the equation,

`1/("A"_"t"^4) = 2 + 1.5 xx 10^-3` t

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[Given: [At] in M and t in sec.]
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[Round off your answer if required]


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