𝑡 (s) [A] (M) 0.0 0.900 25.0 0.609 50.0 0.461 75.0 0.370 For the reaction A⟶products , concentration and time data were collected.

Question

Enter these data into the graphing tool to determine the reaction order.

Calculate the concentration of A after 95.0 s.

Answer 1

Usually, for AP or College Chemistry, you can only have r =- k, r = -kC, and r=-kC² for 0th, 1st, and 2nd order

reactions. Where r is the rate of C change with time (dC/dt) and C is a reactant.

The integrated Laws are C = -kt + C₀ C = C₀e^-kt and 1/C = 1/C₀ + kt

So you plot t vs C - if you get a line → 0th order

you plot t vs. lnC - line 1st order

you plot t vs 1/C - line 2nd order

You can use Excel, TI83+, Logger pro, or some online plotting utility to plot.