Summary of Equations for Exam 4

Acid/Base

Titrations (weak acid titrated with strong base). Given in terms of activities:

Start point:

Near the half stochiometry point:

At the stochiometry point:

Past the stochiometry point:

Activity coef.

for monovalent salt:

For Mⁿ⁺ X^m- :

for an aqueous solution:

Electrochemistry

D_rG = -nFE

F = 9.65 x 10⁴ C/mole

solubility :

MX ß à M⁺(aq) + X^-(aq)

K_S = a_M+ a_X-

Chemical dynamics:

First order:

second order:

Equilibrium approximation

A ß à B à C

Steady state approximation

Reaction rate vs. temperature and E_A.