Decomposition of X exhibits a rate constant of 0 .05   μg / year . How many years are required…

Decomposition of X exhibits a rate constant of 0.05 μg/year. How many years are required for the decomposition of 5 μg of X into 2.5 μg?
  1. 20
  2. 40
  3. 25
  4. 50

Solution

According to unit of rate constant, it is a zero order reaction. Then, half life of reaction will be:

t12=C02k=5μg2×0.05μg/year=50 year

Asked in: JEE Main 2019 (12 Jan Shift 1)

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