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Material Type: Notes; Professor: Thomas; Class: General Chemistry II; Subject: Chemistry; University: Auburn University-Montgomery; Term: Unknown 1989;
Typology: Study notes
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Buffers Buffers
Buffers Buffers
Buffers Buffers
Buffers Buffers
(aq)
2
(l)
3
(aq)
(aq)
Buffers Buffers
Buffers Buffers
(aq)
2
(l)
3
(aq)
(aq)
HHHHC
C
C C
2222
HHHH
3 3
3 3
O O
O O
2222
H
H
H
H
2222
O O
O O
º º
º º
H H
H H
3333
OOOO
C
C
C
C
2222
H H
H H
3333
OOOO
2222
TOTOTO Buffers
Buffers
Buffers Buffers
BuffersBuffers andBuffersBuffers
and bloodandand
blood
blood blood
Oxygentransportedby hemoglobinCO
2
transportedin plasma andred blood cellsHCO
3
is buffer forcontrolling bloodpH
SolubilitySolubilitySolubilitySolubility product
productproductproduct
sp
equilbrium constant for lowsolubility ionic compounds
(s)
(aq)
(aq)
sp
SolubilitySolubilitySolubilitySolubility product
productproductproduct
(s)
(aq)
(aq)
Low
sp
means low solubility
SolubilitySolubilitySolubilitySolubility product
productproductproduct
Solubility
AgCl: 0.00188 g/L
Molar Solubility Ag
2
4
: 0.015 mol/L
Given solubility or K
sp
, find other
Problem 1Problem 1Problem 1Problem 1
Find
sp
for Ag
2
CrO
4
Given solubility is 7.8 x 10
mol/L
Ag
2
CrO
4
2 Ag
CrO
4
2-
1 mol
2 mol +
1 mol
7.8 x 10
mol
²²²²
2 x 7.8 x 10
mol + 7.8 x 10
mol
sp
2
4
2-
sp
2
Problem 2Problem 2Problem 2Problem 2
Convert from mol/L to g/L
2.1 x 10
x 78 = 1.6 x 10
g/L