First slide

Kinetics of chemical reactions

Question

Which of the following plots is(are) correct for the given reaction?
([P]₀ is the initial concentration of P)

Moderate

A
B
C
D

Solution

$\begin{array}{l} rate = k [K^{Br}] \ln \frac{P_{0}}{P} = kt \\ t_{1 / 2} = \frac{0.693}{k} \ln \frac{P}{P_{0}} = - kt \\ \frac{[Q]}{[P]_{0}} = \frac{[P_{0}] - [P]}{[P_{0}]} = 1 - \frac{[P]}{[P_{0}]} = 1 - e^{- k t} \end{array}$

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