Question

Classify each of the following plots based on reaction order. AO In [A] slope =- slope =- In [A] slope = k [A]. Time Time Time [A]: vs. Time In[A] vs. Time 1/[A]: vs. Time Zero Order First Order Second Order Reset

Answer 1

LEFT PLOT : zero order reaction

for zero order reaction the rate law is,    [A]t = [A]0 - Kt

so, [A]t Vs t plot will be a straight line with a slope = - K and intercept = [A]0

MIDDLE PLOT : first order reaction

for first order reaction the rate law is, ln [A]t = ln [A]0 - Kt

so. ln [A]t Vs t plot will be a straight line with a slope = - K and intercept = ln [A]0

RIGHT PLOT : second order reaction

for second order reaction the rate law is, 1/[A]t = 1/[A]0 + Kt

so. 1/ [A]t Vs t plot will be a straight line with a slope = K and intercept = 1/ [A]0