Chemical Kinetics Question 337

Question: In a chemical reaction A is converted into B. The rates of reaction, starting with initial concentrations of A as 2×103M and 1×103M, are equal to 2.40×104Ms1 and 0.60×104Ms1 respectively. The order of reaction with respect to reactant A will be

Options:

A) 0

B) 1.5

C) 1

D) 2

Show Answer

Answer:

Correct Answer: D

Solution:

[d] aB

Initial concentrationRate of reaction2×103M,2.40×104Ms11×103M0.60×104Ms1 rate of reaction r=k[A]x where x = order of reaction hence 2.40×104=k[2×103]x ……(i) 0.60×104=k[1×103]x ……(ii) On dividing eqn.(i) from eqn. (ii) we get 4=(2)x
  x=2 i.e. order of reaction = 2



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