CHM
1032C
Review
for test4
I. Solutions/Molarity
1)
Characteristics
Solute, solvent,
saturated, electrolyte, colloid, suspension
2) Concentrations
·
w/w %
·
Molarity
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M V = moles
(Remember the question: How do you make 2L of 1M NaOH?)
3) Dilutions
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(Remember the
question: How do you make 2L of 1M HCl from 12 M HCl?)
II. Reaction rates and
Equilibria
1) Thermodynamics vs. kinetics
2) 3 ways to increase the rate of the reaction
3) Energy diagram
transition state,
activation energy, reactants, products, reaction coordinate
4) How a catalyst works- (decrease activation energy)
5) Equilibrium constants
6) Le Châtelier’s principle
III.
ACIDS AND BASES
1) What is an acid?
What is a base? (Arrhenius)
2) What is an acid?
What is a base? (Brønsted-Lowry)
3) How do you
measure acidity? (pH)
4) What is the [H+]
given the pH?
5) What is the [OH-]
given the pH?
6) Why isn’t the
pH of 0.1M CH3COOH not 1?
7) Why is the pH of
NH3 basic?
8)
Will an acid/base reaction occur?
9) What is a buffer
solution and how does it keep the pH constant?
Equilibrium
reactions
aA + bB <==> cC +
dD
pH
equations
pH=
-log[H+]
[H+] = 10-pH
pOH=-log[OH-]
[OH-]=10-pOH
pH + pOH= 14 [H+] [OH-]=
10-14
Strong acid
weak acid
acid
HCl
HNO3
H3O+
CH3COOH
H2CO3
HCO3-
NH4+
H2O
NH3
base
Cl-
NO3-
H2O
CH3COO-
HCO3-
CO32-
NH3
OH-
NH2-
weak base
Strong base