Chapter 2 - Acid-Base Chemistry

Question 1

Elements of Acid-Base Chemistry

Answer 1

• ionization
• pH & buffers
• making & breaking bonds heterolytically

Question 2

Keq equation

Answer 2

Keq = [products] / [reactants]

Question 3

General dissociation of an acid formula

Answer 3

HA + H2O A- + H3O+

Question 4

Henderson Hasselbach Equation

Answer 4

PH = pKa + log ([conjugate base]/[weak acid])

Question 5

Buffer

Answer 5

Solution of weak acid and conjugate base that resists changes in pH

Question 6

Mid Point of Titration Curve

Answer 6

• located at center of “flat” part of curve
• acid is half neutralized
• pH = pKa
• [acid] = [base]
• best buffer region

Question 7

Trend of pKa vs. strength of acid

Answer 7

The lower the pKa, the stronger the acid.