1. Tardigrade
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  3. Chemistry
  4. The rate constant of a first order reaction is 231 × 10-5 s-1. How long will 4 g of this reactant reduce to 2 g?

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Q. The rate constant of a first order reaction is $231 \times 10^{-5} s^{-1}$. How long will $4 \,g$ of this reactant reduce to $2\, g$?

KEAMKEAM 2020

Solution:

$K=231 \times 10^{-5} \,S^{-1}$
$t_{1 / 2}=\frac{0.693}{231 \times 10^{-5}}=300 \,S$