Following is the graph between ( a − x ) − 1 and time ' t ' for a second order reaction. The line makes an angle θ = tan − 1 0.5 with the X − axis while intercept OA = 2 L mol − 1 at t = 0 .

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Following is the graph between ( a − x ) − 1 and time ' t ' for a second order reaction. The line makes an angle θ = tan − 1 0.5 with the X − axis while intercept OA = 2 L mol − 1 at t = 0 . Hence rate at the start of the reaction is:

TestHub · Accepted Answer

k t = a − x 1 ​ − a 1 ​ ⟹ a − x 1 ​ = k t + a 1 ​ A graph between ( a − x ) − 1 and time t is a straight line. Hence, k = tan θ = 0.5 . a 1 ​ = O A = 2 ⟹ a = 0.5 . Rate at the start of the reaction R = k [ A ] 2 = 0.5 × ( 0.5 ) 2 = 0.5 × 0.25 = 0.125 m o l L − 1 mi n − 1 .

Chemistry - Chemical Kinetics Question with Solution | TestHub

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