To study the total energy of these processes, Graeme Bird invented the DSMC method to simulate them on the VSS and VHS models. These processes occur at a faster rate than expected in harpoon reactions. Yuan Lee and Dudley Herschbach developed a technique in which these processes are generated by collimated beams. To calculate the rate of these processes, the square root of [read slowly] “eight times kB times temperature, divided by the product of pi and the reduced mass” is multiplied by (*) sigma. These processes occur between A, A-star, and M in the Lindemann mechanism. The product of the frequency of these events and the steric factor is the pre-exponential factor. These events are “effective” if they occur with the proper orientation and if their energy exceeds the activation energy. For 10 points, a theory of reaction kinetics is named for what events in which reactants hit each other? ■END■
ANSWER: reactant collisions [accept collision frequency or collision theory or effective collisions; accept total collision energy; prompt on chemical reactions until “steric” is read by asking “what specific processes in reactions?”; prompt on crossed molecular beam experiments] (DSMC stands for direct simulation Monte Carlo, VSS stands for variable soft sphere, and VHS stands for variable hard sphere. The term in the fourth sentence is the mean molecule velocity. Sigma is the collision cross section.)
<KP, Chemistry>
= Average correct buzz position