Packet 2: Tossup 4

A form of this process that occurs after an applied voltage drives a redox reaction is used to study self-assembled monolayers of thiols on gold or silver surfaces. A fast but imprecise measure of this process’s activation energy at peak temperature is given by the Redhead method. This process dominates when the sticking coefficient is low, and can be stimulated using bakeout when producing an ultrahigh vacuum. The kinetics of a temperature-programmed form of this process are described by the Polanyi–Wigner (10[1])equation. Nitrogen generators use the inverse of this process in a technique facilitated by “pressure swings.” (-5[3])This (-5[3])process can occur (10[1]-5[1])when an atom or molecule (-5[2])overcomes the binding energy of porous materials like zeolites (-5[2])or (-5[1])activated carbon. (-5[1])For 10 points, name this process where (-5[1])adsorbed molecules are released (0[1])from a surface. ■END■ (10[5]0[11])

Back to tossups

Buzzes

Summary