FORMULARI QUÍMICA Primer cognom________________ Segon cognom ________________ Nom___________
0 ºC = 273,15 K 1 cal = 4,184 J
R = 0,08205 atm L K-1 mol-1 = 8,314 J K-1 mol-1 = 1,987 cal K-1 mol-1
1 Pa = 1 N m-2 = J m-3 1 atm = 1,013 bar = 1,013 105 Pa = 760 mm Hg = 760 Torr 1 atm L = 101,3 J
Ln x = 2,30258 Log10 x
1 g = NA uma NA = 6,02214 1023 mol-1 e- = - 1,60218 10-19 C F = 96485 C mol-1 1 A = 10-10 m
12 9 6 3 2 1 -1 -2 -3 -6 -9 -12 -15 -18
T G M k h da d c m µ n p f a
tera giga mega kilo hecto deca deci centi mili micro nano pico femto atto
TERMODINÀMICA I EQUILIBRI
orfr
opfp
oHHH ,,
orfr
opfp
oGGG ,,
o
r
o
p
orp SSS
STHG ººº STHG
QLnTRGG o eq
oKLnTRG
R
S
T
R
H
KLn oo
eq
1
211,
2, 11
TTR
H
K
K
Ln o
eq
eq
TRcTR
V
n
P t
n
ii
n
iit PxPP
11
n
cP RTKK
)( on grgp
n,,
ÀCID-BASE
]HA[
]A[]H[ -
3
O
Ka ]HA[
]A[
10
-
)(
a
pKpH ]HA[
]A[
lg
-
10
a
pKpH
aa KpK 10
log
Ab
HAaw KKK ,
, pKa (HA) + pKb (A-) =14
Distribució de les formes protonades
Àcid monopròtic ct = [HA] + [A-] = [HA] + [HA] 10 (pH-pKa) = [HA] ( 1 + 10 (pH-pKa) )
Àcid dipròtic ct = [H2A] + [HA-] + [A2-] = [H2A] + [H2A] 10 (pH-pKa1) + [H2A] 10 (pH-pKa1) 10 (pH-pKa2) =
[H2A] ( 1 + 10 (pH-pKa1) + 10 (pH-pKa1) 10 (pH-pKa2) )
Àcid tripròtic ct = [H3A] + [H2A-] + [HA2-] + [A3-] =
[H3A] + [H3A] 10 (pH-pKa1) + [H3A] 10 (pH-pKa1) 10 (pH-pKa2) + [H3A] 10 (pH-pKa1) 10 (pH-pKa2) 10 (pH-pKa3) =
[H3A] ( 1+10 (pH-pKa1) +10 (pH-pKa1) 10 (pH-pKa2) + 10 (pH-pKa1) 10 (pH-pKa2) 10 (pH-pKa3) )
REDOX
Q
Fn
TR
EQLn
Fn
TR
EE OO
10
log30258,2 )º25(0592,030258,2 C
F
TR EFnG
eqeq
OK
Fn
TR
KLn
Fn
TR
E10
log30258,2
