Chem 111- Test 2- St. Thomas Flashcards
1
Q
Precipitate
A
forms a solid
2
Q
HCl
A
hydrochloric acid
3
Q
HBr
A
hydryobromic acid
4
Q
HI
A
hydroiodic acid
5
Q
HNO3
A
Nitric Acid
6
Q
H2SO4
A
sulfuric acid
7
Q
HF
A
hydroflouric acid
8
Q
H2CO3
A
carbonic acid
9
Q
H3PO4
A
phosphoric acid
10
Q
CH3CO2H
A
Acetic acid
11
Q
Hyrdochloric acid
A
HCl
12
Q
hydrobromic acid
A
HBr
13
Q
hydroiodic acid
A
HI
14
Q
Nitric Acid
A
HNO3
15
Q
Sulfuric acid
A
H2SO4
16
Q
Hydrofluoric acid
A
HF
17
Q
Carbonic acid
A
H2CO3
18
Q
phosphoric acid
A
H3PO4
19
Q
Acetic acid
A
CH3CO2H
20
Q
Strong acids
A
HCl, HBr, HI, HNO3, H2SO4
21
Q
weak acids
A
HF, H2CO3, H3PO4, CH3CO2H
22
Q
Oxidation rules (in order)
A
- H=+1 (or -1 when bound to a metal)
- O=-2
*Halogens are -1
23
Q
Oxidized
A
loss of electrons, so the oxideation number becomes more positive
24
Q
Reduction/reduced
A
gain of electrons, so the oxidation number gets more negative
25
oxidizing agent
the reactant that causes oxidation of another
26
reducing agent
cthe reactant that causes reduction of another
27
single displacement
a reaction in which one element is substituted for another element in a compound
28
combustion
reactant with O2 forms CO2 + H20 as products
29
percent yield
(actual/theoretical)x100
30
kinetic energy
energy of movement
31
potential energy
energy that is stored
32
total energy +
U=q+w (total energy=heat+work)
33
heat (q)
related to temp and how fast molecules are moving
34
work (w)
related to displacement of an object
35
endothermic
positive energy. Energy is required by system (energy is gained)
36
exothermic
negative energy. energy is released by system (energy lost)
37
system
the chemical reaction or smth else as defined
38
surroundings
everything else besides system
39
calorimetry formula thing
qsystem= -(qsurroundings)
40
q=
M*C*changeT (aka mass*specific heat*change in temp)
41
for delta T, what is the conversion of C to K
C=K ONLY for delta T
42
enthalpy
delta H
43
what is delta H measured in
KJ/mol
44
Hess's law
if you can add up the reactions, you can add up delta H values
45
formation reaction requirements for hess's law
forms 1 mole of product AND reactants are in elemental form
46
standard enthalpy
the equation with delta H and summations and stuff
