Q.

Consider the following parallel reactions, all are first order:
 Ak1BAk22CAk33D k1,k2and k3are  rate  constants (with different values)
Which of the following statements are incorrect

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a

Concentration of neither B, C and D ever exceeds A. 

b

If k1>k2>k3, at any time ‘t’, the order of concentrations are: [B]>[C]>[D]

c

B, C and D are produced in 1:2:3 molar ratio

d

At any time ‘t’ the ratio of concentrations [B]:[C]:[D]is  k1:k2:k3

answer is A, B, C, D.

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Detailed Solution

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B, C and D would be produced in k1:k2:k3 ratio. Due to stoichiometry of products, concentration of C and D may exceed concentration of A. If k1>k2>k3 then [B]<[C]<[D] is possible due to stoichiometry.

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