Chemical Kinetics - Result Question 43
####43. The plot of concentration of the reactant vs. time for a reaction is a straight line with a negative slope. The reaction follows a
[1996]
(a) zero order rate equation
(b) first order rate equation
(c) second order rate equation
(d) third order rate equation
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Solution:
- (a) For a zero order reaction, concentration decreases at a contant rate with time. Hence, the plot is a straight line with a negative slope.
For zero order reaction
$ \begin{aligned} & K=\frac{[C_0]-[C]}{t} \\ & {[C_0]=-K t+[C_0]} \\ & \Rightarrow \text{ slope }=-K, \text{ interecept }=[C_0] \end{aligned} $
