1. Tardigrade
  2. Question
  3. Chemistry
  4. Decomposition of X exhibits a rate constant of 0.05 μ g/year. How many years are required for the decomposition of 5 μg of X into 2.5 μ g ?

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Q. Decomposition of $X$ exhibits a rate constant of $0.05 \mu g/year$. How many years are required for the decomposition of 5 $\mu$g of $X$ into $2.5\, \mu \,g$ ?

JEE MainJEE Main 2019Chemical Kinetics

Solution:

Rate constant $( K )=0.05 \mu g /$ year

means zero order reaction

$t _{1 / 2}=\frac{ a _{0}}{2 K }=\frac{5 \mu g }{2 \times 0.05 \mu g / year }=50$ year