The reaction A P has the rate constant 7.86x10-3 M min ! We know that the plots of In[A] versus time and 1/[A] versus time are curved lines, while a plot of (A) versus time is a straight line. If the initial concentration of A is 2.61 M, what is the concentration of A after 168 minutes? Answer: M Check We know the rate law for a particular reaction A-Pis rate = 5.61x10 mmin' [A] Calculate the time that it takes for the concentration of A to drop from 2.61 M to 1.36 M. Answer: min Check