Gen Chem Flashcards
(45 cards)
1
Q
Colligative property
A
depends on number of solute particles in given volume of water
2
Q
FP depression of an aq solution is a ___ property. What does this mean?
A
colligative;
If there are more solute particles, then the FP is lower
3
Q
1/2 equivalence point
A
for weak acids
[Ha] = [A-]
[H3O+] = Ka
pH = pKA
4
Q
Catalysts can increase the rate of reaction without…
A
- incr number of collisions
- KE of reactants
- Keq of rxn
5
Q
Elemental sulfur
A
S or S8
6
Q
Combustion always involves which reactant?
A
O2
7
Q
CH3COO -
A
acetate
8
Q
NH4+
A
ammonium
9
Q
NH3
A
ammonia
10
Q
CO3 2-
A
carbonate
11
Q
ClO3 -
A
chlorate
12
Q
ClO2 -
A
chlorite
13
Q
CrO4 2-
A
Chromate
14
Q
CN -
A
cyanide
15
Q
Cr2O7 2-
A
Dichromate
16
Q
HCO3 -
A
bicarb
17
Q
HSO4 -
A
Bisulfate
18
Q
HS -
A
bisulfide
19
Q
HSO3 -
A
bisulfite
20
Q
ClO -
A
Hypochlorite
21
Q
NO3 -
A
Nitrate
22
Q
NO2 -
A
Nitrite
23
Q
ClO4 -
A
Perchlorate
24
Q
MnO4 -
A
Permanganate
25
PO4 3-
Phosphate
26
PO3 3-
Phosphite
27
SO4 2-
sulfate
28
SO3 2-
Sulfite
29
HNO3
Nitric acid
30
CH3COOH
acetic acid
31
for spontaneous reactions, cell voltage is positive / negative?
positive (E_cell > 0 & G < 0)
32
equilibrium & reaction quotient expressions do not include...
pure solids & liquids
33
Which compounds when added to a saturated solution of KNO3 would cause crystals to precipitate? Why?
Compounds with common ion (K+ or NO3-).
| -> common ion effect
34
Avogadro's number
6.02 x 10^23
35
strength of base depends on...
Stronger base:
- less EN
- higher (-) charge
36
Catalytic amount
compound is regenerated in a later reaction and can be reused over and over again
37
Why are pure liquids omitted from Keq calculations?
because their concentrations remain essentially constant
38
HH
pH = pKa + [conj base] / [weak acid]
39
in electrochemical cells, what becomes a gas?
the reduced compound
40
Higher / lower [solute] will have a higher BP?
Higher
41
Ag tends to always be reduced / oxidized?
reduced
42
Cu tends to always be reduced / oxidized?
oxidized
43
Ksp
Solubility Product Constant
| Pretty much Keq but used for solubility purposes
44
Ksp changes if ___ is changed
Temperature, and nothing else.
45
vapour ____ changes depending on the size of the container
rate of vaporization
