Key Point for Chapter 17

( General Chemistry II )

Ch 17: Buffer Solution and Acid- Base Titration

(1). Buffer ---> Smooth the variation of PH caused by sudden addition of

Acid and Base.

a) Made of Weak Acid and its conjugated base ( Salt)

Weak Base and its conjugated acid ( Salt )

b) Mechanism

c) PH calculation of a buffer solution

PH = -log ka + log [ c.base]/[w.acid]

POH = -log kb + log [ c.acid]/[w.base]

(2) PH calculation of Acid--Base Titration

a) Strong acid and Strong base

b) Strong acid and Weak base

c) Strong base and Weak acid

(3) Acidity of a Salt

(4) Equilibrium of a solution product

a) Definition of Ksp

b) Calculation of Molar Solubility

c) Calculation of Ksp

d) Predict the solubility in different acidic or basic environment