Ap Chemistry Equations & Constants Chart Page 2
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1
2
3GASES, LIQUIDS, AND SOLUTIONS
=
pressure
P
=
V
volume
PV = nRT
=
T
temperature
moles A
=
n
number of moles
× X
P
= P
, where X
=
A
total
A
A
total moles
=
m
mass
=
M
molar mass
P
= P
+ P
+ P
+ . . .
total
A
B
C
=
density
D
m
=
KE
kinetic energy
n =
M
=
velocity
Ã
=
absorbance
K = ° C + 273
A
=
a
molar absorptivity
m
=
path length
D =
b
V
=
c
concentration
1
2
KE per molecule =
mv
2
-
-
1
1
=
Gas constant,
R
8.314 J mol K
Molarity, M = moles of solute per liter of solution
-
-
1
1
=
0.08206
L atm mol K
-
-
1
1
=
62.36 L torr mol K
A = abc
=
1 atm
760 mm Hg
=
760 torr
=
STP
0.00 C and 1.000 atm
THERMOCHEMISTRY/ ELECTROCHEMISTRY
=
q
heat
=
mass
m
=
q
mc T
D
=
c
specific heat capacity
=
T
temperature
=
-
Â
Â
S
S
products
S
reactants
D
=
S
standard entropy
=
-
Â
Â
H
H
products
H
reactants
D
D
D
f
=
f
standard enthalpy
H
=
G
standard free energy
=
-
Â
Â
G
G
products
G
reactants
D
D
D
f
f
=
n
number of moles
=
E
standard reduction potential
=
-
D
G
D
H
T S
D
=
I
current (amperes)
= -
ln
RT
K
=
charge (coulombs)
q
= ime (seconds)
t
t
= -
n F E
F =
Faraday’s constant ,
96,485 coulombs per mole
q
I
of electrons
t
1 joule
=
1volt
1 coulomb
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