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In the reaction, P + Q → R + S The time taken for 75% reaction of P is twice the time taken for 50% reaction of P. The concentration of Q varies with reaction time as shown in the figure. The overall order of the reaction is

Options

  1. A2
  2. B3
  3. C0
  4. D1

Correct answer

D. 1

Step-by-step solution

For P, t 75 % = 2 t 50 % I s t order w.r.t 'P' For Q, Q = Q 0 - kt . i.e. zero order. i.e. overall order of a reaction = 1

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