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Q.

The compound A decomposed (A → products) by first order kinetics. If the concentration of A dropped from 0.1 M to 0.05 M in 30 minutes, find the rate of reaction after 60 minutes, from start in M min-1:

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a

ln⁡2600

b

ln⁡2120

c

ln⁡260

d

ln⁡21200

answer is A.

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Detailed Solution

Rate of reaction after 60 minutes, from start in M min-1

t1/2=30min[A]t=0.025r=0.69330×0.025=ln⁡21200

Hence, the correct option is a.

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