Please note: This page has a code bug which occasionally moves the "Total Done" count up without warning. Using this page in the Firefox browser is highly recommended; the bug does not appear in this browser (April 2015.)
This page will provide exercises in relating reaction mechanisms to the appropriate rate laws. When you click "New Problem", a large window will open which has an overall reaction, the reaction mechanism and the set of possible rate laws. The system is completely homogeneous, so all species shown have variable concentrations. All processes preceding the rds (rate determining step) are rapidly attained equilibria. The observed rate law will only contain species identified as reagents in the overall reaction. To submit the answer, click on the circle in front of the correct rate law. As usual, the results and score appear in the table on the main page. If you miss a problem three times, pressing "Show Answer" will cause the correct answer to appear.