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For a given reaction R → P, t1/2 is related to [A]0 as given in table : Given : log 2 = 0.30 Which of the following is true ? A. The order of the reaction is 1/2 B. If [A]0 is 1M, then t1/2 is 200√10 min C. The order of the reaction changes to 1 if the concentration of reactant changes from 0.100 M to 0.500 M. D. t1/2 is 800 min for [A]0 = 1.6 M Choose the correct answer from the options given below : (1) A and C only (2) A and B only (3) A, B and D only (4) C and D only
- (1) A and C only
- (2) A and B only
- (3) A, B and D only
- (4) C and D only
Correct answer: (3) A, B and D only
Solution
Options A, B, and D are correct because the reaction is of order 1/2, which is consistent with the provided half-life relationship. For [A]0 = 1M, the calculated half-life aligns with the given formula, and for [A]0 = 1.6M, the half-life can be derived as 800 min, confirming the relationship holds true.
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