lectureplus timberlake1 acids and bases. lectureplus timberlake2 acids and bases acids produce...
Post on 01-Jan-2016
215 Views
Preview:
TRANSCRIPT
LecturePLUS Timberlake 1
Acids and Bases
LecturePLUS Timberlake 2
Acids and Bases
Acids produce Hydrogen (H+) in solutions
Bases produce Hydroxide (OH-) in solutions
LecturePLUS Timberlake 3
Acids
Produce more H+ ions in water
Taste sour
Corrode (eat thru) metals
React with bases to form salts and water
LecturePLUS Timberlake 4
Bases
Produce more OH- ions in water
Taste bitter, chalky
Are electrolytes
Feel soapy, slippery
React with acids to form salts and
water
LecturePLUS Timberlake 5
Acid or base?
H+
H+
H+ H+OH-
OH-
OH-
LecturePLUS Timberlake 6
Acid or base?
H+
H+
H+
H+
OH-
OH-
OH-
OH-
OH-
LecturePLUS Timberlake 7
LecturePLUS Timberlake 8
Strong acids and bases
Strong Acid • Has a very LOW pH (0-3)Strong Base• Has a very HIGH pH (11-14)
Mor
e ba
sic
Mor
e ac
idic
NaOH, 0.1 MHousehold bleachHousehold ammonia
Lime waterMilk of magnesia
Borax
Baking sodaEgg white, seawaterHuman blood, tearsMilkSalivaRain
Black coffeeBananaTomatoesWineCola, vinegarLemon juice
Gastric juice
LecturePLUS Timberlake 9
Weak acids and bases• Weak Acid= pH close to 7 (3.1 -
6.9)• Weak Base= pH close to 7 (7.1 -
10.9)
LecturePLUS Timberlake 10
pH scale
• Measures the # H+ and OH- in a solution
• Ranges from 0-14 • 0- 6.9= Acid = # of H+ ions > # of
OH- ions• 7 = Neutral = # of H+ ions = # of
OH- ions • 7.1- 14 = Base = # of OH- ions > #
of H+ ions
LecturePLUS Timberlake 11
LecturePLUS Timberlake 12
LecturePLUS Timberlake 13
LecturePLUS Timberlake 14
LecturePLUS Timberlake 15
LecturePLUS Timberlake 16
Learning Check AB1
Describe the solution in each of the following as: 1) acid 2) base or 3)neutral.
A. ___soda
B. ___soap
C. ___coffee
D. ___ wine
E. ___ water
F. ___ grapefruit
LecturePLUS Timberlake 17
Solution AB1
Describe each solution as:
1) acid 2) base or 3) neutral.
A. _1_ soda
B. _2_ soap
C. _1_ coffee
D. _1_ wine
E. _3_ water
F. _1_ grapefruit
LecturePLUS Timberlake 18
Learning Check AB2
Identify each as characteristic of an A) acid or B) base
____ 1. Sour taste
____ 2. Produces OH- in aqueous solutions
____ 3. Chalky taste
____ 4. Is an electrolyte
____ 5. Produces H+ in aqueous solutions
LecturePLUS Timberlake 19
Solution AB2
Identify each as a characteristic of an A) acid or B) base
_A_ 1. Sour taste
_B_ 2. Produces OH- in aqueous solutions
_B_ 3. Chalky taste
B 4. Is an electrolyte
_A_ 5. Produces H+ in aqueous solutions
LecturePLUS Timberlake 20
Learning Check AB5
Acid, Base Nameor Salt
CaCl2 ______ _________________
KOH ______ _________________
Ba(OH)2 ______ _________________
HBr ______ _________________
H2SO4 ______ __________________
LecturePLUS Timberlake 21
Solution AB5
Acid, Base Nameor Salt
CaCl2 salt calcium chloride
KOH base potassiuim hydroxide
Ba(OH)2 base barium hydroxide
HBr acid hydrobromic acid
H2SO4 acid sulfuric acid
top related