For the decomposition reaction of a particul ar compound B, the concentration of
ID: 103289 • Letter: F
Question
For the decomposition reaction of a particul ar compound B, the concentration of B was measured as a function of time. Plots of (B] vs time, InB] vs. time, and B).time were prepared from this data and are presented below. Based on these data plots, what is the order of the reaction? (Only one of the following graphs is linear, the lines are provided to allow easier comparison of the data points.) 0.7 065 0 0.55 05 0 45 04 035 03 0.4 0.5 0.6 0.7 0.8 0.9 35 2.9 2.7 2.5 2.3 1.9 1.7 1.1 0 5 10 15 20 25 30 35 40 45 0 5 10 15 20 25 30 35 40 45 0 5 10 15 20 25 30 35 40 45 Time. min Time, min Time, minExplanation / Answer
It is evident from the given figures that the plot of 1/[B] vs time is a perfect straight line. All the data points align perfectly on a straight line. For the other two plots, the data points are off the straight line. Therefore, the plot of 1/[B] vs time is linear and the reaction is second order in B (ans).