Kelvi

A first-order reaction has a specific reaction rate of $10^{-2}$ s $^{-1}.$ How much time will it take for 20 g of the reactant to reduce to 5 g?

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ChemicalKinetics

2017

chemistry

$138.6$ s

$346.5$ s

$693.0$ s

$238.6$ s

Explanation

To solve this problem, we need to use the integrated rate equation for a first-order reaction. $\newline$ The integrated rate equation for a first-order reaction is: $\newline \ln \left( \frac{[R]_0}{[R]} \right) = k \cdot t \newline$

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A first-order reaction has a specific reaction rate of 10−2 10^{-2} 10−2 s−1.^{-1}. −1. How much time will it take for 20 g of the reactant to reduce to 5 g?

Explanation

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A first-order reaction has a specific reaction rate of $10^{-2}$ s $^{-1}.$ How much time will it take for 20 g of the reactant to reduce to 5 g?