1. Tardigrade
  2. Question
  3. Chemistry
  4. Decomposition of A follows first order kinetics by the following equation. 4 A ( g ) longrightarrow B ( g )+2 C ( g ) If initially, total pressure was 800 mm of Hg and after 10 minutes it is found to be 650 mm of Hg. What is half-life (in min.) of A ? (Assume only A is present initially)

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Q. Decomposition of A follows first order kinetics by the following equation.
$4 A ( g ) \longrightarrow B ( g )+2 C ( g )$
If initially, total pressure was $800\, mm$ of $Hg$ and after $10$ minutes it is found to be $650\, mm$ of $Hg$. What is half-life (in $ \min$.) of $A$ ? (Assume only $A$ is present initially)

Chemical Kinetics

Solution:

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$\therefore p=150$
Pressure of $A=200$, so
$\therefore 2 \times t_{1 / 2}=10$ minutes
$t_{1 / 2}=5$ minutes