tonight’s homework: read pages 595-599. do practice problems 1 & 2
TRANSCRIPT
Tonight’s homework:Read pages 595-599.
Do practice problems 1 & 2.
Acids & BasesWhat is an acid? What is a base?
How man acids can you name?
How many bases can you name?
Acids & Bases
Acids & Bases
Acids & Bases
Acids & Bases
Acids & Bases
H2O + H2O ↔ H3O+ + OH-
Acids & Bases
H2O + H2O ↔ H3O+ + OH-
H2O ↔ H+ + OH-
Acids & Bases
H2O + H2O ↔ H3O+ + OH-
H2O ↔ H+ + OH-
There are two different definitions for acids and bases.
You should know them both.
Arrhenius ModelAn acid is a substance that contains hydrogen and will ionize to produce H+ ions in solution.
A base is a substance that contains hydroxide and dissociates to produce OH- ions in solution.
Arrhenius Model
HCl ↔ H+ + Cl-
Arrhenius Model
HCl ↔ H+ + Cl-
NaOH ↔ Na+ + OH-
Arrhenius Model
HCl ↔ H+ + Cl-
NaOH ↔ Na+ + OH-
NH3 ↔ ?
Bronsted-Lowry ModelAn acid is an H+ donor.
A base is an H+ acceptor.
Bronsted-Lowry Model
HCl + H2O ↔ H3O+ + Cl-
Bronsted-Lowry Model
HCl + H2O ↔ H3O+ + Cl-
NaOH + H+ ↔ Na+ + H2O
Bronsted-Lowry Model
HCl + H2O ↔ H3O+ + Cl-
NaOH + H+ ↔ Na+ + H2O
NH3 + H2O ↔ NH4+ + OH-
Bronsted-Lowry Model
HCl + H2O ↔ H3O+ + Cl-
NaOH + H+ ↔ Na+ + H2O
NH3 + H2O ↔ NH4+ + OH-
Three more definitions:Conjugate acid is produced
when a base accepts H+ from an acid.
Three more definitions:Conjugate acid is produced
when a base accepts H+ from an acid.
NH3 + H+ ↔ NH4+
Three more definitions:Conjugate base is produced
when an acid donates H+ to a base.
Three more definitions:Conjugate base is produced
when an acid donates H+ to a base.
HCl ↔ H+ + Cl-
Three more definitions:amphoteric = can act as an
acid or as a base.
Three more definitions:amphoteric = can act as an
acid or as a base.
H2O + H2O ↔ H3O+ + OH-
HomeworkRead pages 595-599.
Do practice problems 1 & 2.
HomeworkRead pages 595-599.
Do practice problems 1 & 2.You will need these formulas:
Nitric acid HNO3
Sulfuric acid H2SO4
Hydrobromic acid HBr
Hydrochloric acid HCl