I've noticed that recently most of my chemistry questions that get answered have also been incorrect. I cant help but feel like this is a discrepncy between either the methods used, or the values of the refreances when choosing Ka,Ksp,Kb, costants of the nature. In order to avoid this I will post 2 pictures. The fisrt one will be the question I am asking, and the second one will be a worked question of similar nature that I missed. I will also post the refrences that I am using. Please use the numbers off those refernces or the answer will be wrong. Thank
Asking:
Missing:
Charts:
Ksp-
BromidesPbBr26.3 Ã 10-6
AgBr3.3 Ã 10-13CarbonatesBaCO38.1 Ã 10-9
CaCO33.8 Ã 10-9
CoCO38.0 Ã 10-13
CuCO32.5 Ã 10-10
FeCO33.5 Ã 10-11
PbCO31.5 Ã 10-13
MgCO34.0 Ã 10-5
MnCO31.8 Ã 10-11
NiCO36.6 Ã 10-9
Ag2CO38.1 Ã 10-12
ZnCO31.5 Ã 10-11ChloridesPbCl21.7 Ã 10-5
AgCl1.8 Ã 10-10ChromatesBaCrO42.0 Ã 10-10
CaCrO47.1 Ã 10-4
PbCrO41.8 Ã 10-14
Ag2CrO49.0 Ã 10-12CyanidesNi(CN)23.0 Ã 10-23
AgCN1.2 Ã 10-16
Zn(CN)28.0 Ã 10-12FluoridesBaF21.7 Ã 10-6
CaF23.9 Ã 10-11
PbF23.7 Ã 10-8
MgF26.4 Ã 10-9HydroxidesAgOH2.0 Ã 10-8
Al(OH)31.9 Ã 10-33
Ca(OH)27.9 Ã 10-6
Cr(OH)36.7 Ã 10-31
Co(OH)22.5 Ã 10-16
Cu(OH)21.6 Ã 10-19
Fe(OH)27.9 Ã 10-15
Fe(OH)36.3 Ã 10-38
Pb(OH)22.8 Ã 10-16
Mg(OH)21.5 Ã 10-11
Mn(OH)24.6 Ã 10-14
Ni(OH)22.8 Ã 10-16
Zn(OH)24.5 Ã 10-17IodidesPbI28.7 Ã 10-9
AgI1.5 Ã 10-16OxalatesBaC2O41.1 Ã 10-7
CaC2O42.3 Ã 10-9
MgC2O48.6 Ã 10-5PhosphatesAlPO41.3 Ã 10-20
Ba3(PO4)21.3 Ã 10-29
Ca3(PO4)21.0 Ã 10-25
CrPO42.4 Ã 10-23
Pb3(PO4)23.0 Ã 10-44
Ag3PO41.3 Ã 10-20
Zn3(PO4)29.1 Ã 10-33SulfatesBaSO41.1 Ã 10-10
CaSO42.4 Ã 10-5
PbSO41.8 Ã 10-8
Ag2SO41.7 Ã 10-5SulfidesCaS8 Ã 10-6
CoS5.9 Ã 10-21
CuS7.9 Ã 10-37
FeS4.9 Ã 10-18
Fe2S31.4 Ã 10-88
PbS3.2 Ã 10-28
MnS5.1 Ã 10-15
NiS3.0 Ã 10-21
Ag2S1.0 Ã 10-49
ZnS2.0 Ã 10-25SulfitesBaSO38.0 Ã 10-7
CaSO31.3 Ã 10-8
Ag2SO31.5 Ã 10-14
Ka&Kb-
Acetic acid
CH3COOH
1.8 Ã 10-5
Acetylsalicylic acid (aspirin)
HC9H7O4
3.0 Ã 10-4
Aluminum ion
Al(H2O)43+
1.2 Ã 10-5
Arsenic acid
H3AsO4
2.5 Ã 10-4
5.6 Ã 10-8
3.0 Ã 10-13
Ascorbic acid
H2C6H6O6
7.9 Ã 10-5
1.6 Ã 10-12
Benzoic acid
C6H5COOH
6.3 Ã 10-5
Carbonic acid
H2CO3
4.2 Ã 10-7
4.8 Ã 10-11
Ferric ion
Fe(H2O)63+
4.0 Ã 10-3
Formic acid
HCOOH
1.8 Ã 10-4
Hydrocyanic acid
HCN
4.0 Ã 10-10
Hydrofluoric acid
HF
7.2 Ã 10-4
Hydrogen peroxide
H2O2
2.4 Ã 10-12
Hydrosulfuric acid
H2S
1.0 Ã 10-7
1.0 Ã 10-19
Hypochlorous acid
HClO
3.5 Ã 10-8
Nitrous acid
HNO2
4.5 Ã 10-4
Oxalic acid
H2C2O4
5.9 Ã 10-2
6.4 Ã 10-5
Phenol
C6H5OH
1.0 Ã 10-10
Phosphoric acid
H3PO4
7.5 Ã 10-3
6.2 Ã 10-8
3.6 Ã 10-13
Sulfuric acid
H2SO4
very large
1.2 Ã 10-2
Sulfurous acid
H2SO3
1.7 Ã 10-2
6.4 Ã 10-8
Zinc ion
Zn(H2O)42+
2.5 Ã 10-10
Base
Formula
Kb
Ammonia
NH3
1.8 Ã 10-5
Aniline
C6H5NH2
7.4 Ã 10-10
Caffeine
C8H10N4O2
4.1 Ã 10-4
Codeine
C18H21O3N
8.9 Ã 10-7
Diethylamine
(C2H5)2NH
6.9 Ã 10-4
Dimethylamine
(CH3)2NH
5.9 Ã 10-4
Ethylamine
C2H5NH2
4.3 Ã 10-4
Hydroxylamine
NH2OH
9.1 Ã 10-9
Isoquinoline
C9H7N
2.5 Ã 10-9
Methylamine
CH3NH2
4.2 Ã 10-4
Morphine
C17H19O3N
7.4 Ã 10-7
Piperidine
C5H11N
1.3 Ã 10-3
Pyridine
C5H5N
1.5 Ã 10-9
Quinoline
C9H7N
6.3 Ã 10-10
Triethanolamine
C6H15O3N
5.8 Ã 10-7
Triethylamine
(C2H5)3N
5.2 Ã 10-4
Trimethylamine
(CH3)3N
6.3 Ã 10-5
Urea
N2H4CO
1.5 Ã 10-14
It is of interest to decide if an analytical separation of the metal ions can be efected by selective precipitation of carbonates from a solution that is9.0sx10 M in cuz and 0.10S M in Ba Baco. Cuco, K 2.50x10 To analyze this problem, answer the following questions. (1) What carbonate concentration is needed to precipitate 99.9% of the metal that foms the least soluble carbonate? MM (2) When 99.9% of the least soluble carbonate has precipitated, ill all of the metal that foms the more soluble carbonate still remain in solution (3) What is the upper limit on the carbonate ion concentration if the more soluble compound is not to precipitate? 4 If the DCO is at this upper limit, what percentage of the metal that foms the least soluble carbonate remains in solution'
I've noticed that recently most of my chemistry questions that get answered have also been incorrect. I cant help but feel like this is a discrepncy between either the methods used, or the values of the refreances when choosing Ka,Ksp,Kb, costants of the nature. In order to avoid this I will post 2 pictures. The fisrt one will be the question I am asking, and the second one will be a worked question of similar nature that I missed. I will also post the refrences that I am using. Please use the numbers off those refernces or the answer will be wrong. Thank
Asking:
Missing:
Charts:
Ksp-
BromidesPbBr26.3 Ã 10-6
AgBr3.3 Ã 10-13CarbonatesBaCO38.1 Ã 10-9
CaCO33.8 Ã 10-9
CoCO38.0 Ã 10-13
CuCO32.5 Ã 10-10
FeCO33.5 Ã 10-11
PbCO31.5 Ã 10-13
MgCO34.0 Ã 10-5
MnCO31.8 Ã 10-11
NiCO36.6 Ã 10-9
Ag2CO38.1 Ã 10-12
ZnCO31.5 Ã 10-11ChloridesPbCl21.7 Ã 10-5
AgCl1.8 Ã 10-10ChromatesBaCrO42.0 Ã 10-10
CaCrO47.1 Ã 10-4
PbCrO41.8 Ã 10-14
Ag2CrO49.0 Ã 10-12CyanidesNi(CN)23.0 Ã 10-23
AgCN1.2 Ã 10-16
Zn(CN)28.0 Ã 10-12FluoridesBaF21.7 Ã 10-6
CaF23.9 Ã 10-11
PbF23.7 Ã 10-8
MgF26.4 Ã 10-9HydroxidesAgOH2.0 Ã 10-8
Al(OH)31.9 Ã 10-33
Ca(OH)27.9 Ã 10-6
Cr(OH)36.7 Ã 10-31
Co(OH)22.5 Ã 10-16
Cu(OH)21.6 Ã 10-19
Fe(OH)27.9 Ã 10-15
Fe(OH)36.3 Ã 10-38
Pb(OH)22.8 Ã 10-16
Mg(OH)21.5 Ã 10-11
Mn(OH)24.6 Ã 10-14
Ni(OH)22.8 Ã 10-16
Zn(OH)24.5 Ã 10-17IodidesPbI28.7 Ã 10-9
AgI1.5 Ã 10-16OxalatesBaC2O41.1 Ã 10-7
CaC2O42.3 Ã 10-9
MgC2O48.6 Ã 10-5PhosphatesAlPO41.3 Ã 10-20
Ba3(PO4)21.3 Ã 10-29
Ca3(PO4)21.0 Ã 10-25
CrPO42.4 Ã 10-23
Pb3(PO4)23.0 Ã 10-44
Ag3PO41.3 Ã 10-20
Zn3(PO4)29.1 Ã 10-33SulfatesBaSO41.1 Ã 10-10
CaSO42.4 Ã 10-5
PbSO41.8 Ã 10-8
Ag2SO41.7 Ã 10-5SulfidesCaS8 Ã 10-6
CoS5.9 Ã 10-21
CuS7.9 Ã 10-37
FeS4.9 Ã 10-18
Fe2S31.4 Ã 10-88
PbS3.2 Ã 10-28
MnS5.1 Ã 10-15
NiS3.0 Ã 10-21
Ag2S1.0 Ã 10-49
ZnS2.0 Ã 10-25SulfitesBaSO38.0 Ã 10-7
CaSO31.3 Ã 10-8
Ag2SO31.5 Ã 10-14
Ka&Kb-
Acetic acid | CH3COOH | 1.8 Ã 10-5 | ||
Acetylsalicylic acid (aspirin) | HC9H7O4 | 3.0 Ã 10-4 | ||
Aluminum ion | Al(H2O)43+ | 1.2 Ã 10-5 | ||
Arsenic acid | H3AsO4 | 2.5 Ã 10-4 | 5.6 Ã 10-8 | 3.0 Ã 10-13 |
Ascorbic acid | H2C6H6O6 | 7.9 Ã 10-5 | 1.6 Ã 10-12 | |
Benzoic acid | C6H5COOH | 6.3 Ã 10-5 | ||
Carbonic acid | H2CO3 | 4.2 Ã 10-7 | 4.8 Ã 10-11 | |
Ferric ion | Fe(H2O)63+ | 4.0 Ã 10-3 | ||
Formic acid | HCOOH | 1.8 Ã 10-4 | ||
Hydrocyanic acid | HCN | 4.0 Ã 10-10 | ||
Hydrofluoric acid | HF | 7.2 Ã 10-4 | ||
Hydrogen peroxide | H2O2 | 2.4 Ã 10-12 | ||
Hydrosulfuric acid | H2S | 1.0 Ã 10-7 | 1.0 Ã 10-19 | |
Hypochlorous acid | HClO | 3.5 Ã 10-8 | ||
Nitrous acid | HNO2 | 4.5 Ã 10-4 | ||
Oxalic acid | H2C2O4 | 5.9 Ã 10-2 | 6.4 Ã 10-5 | |
Phenol | C6H5OH | 1.0 Ã 10-10 | ||
Phosphoric acid | H3PO4 | 7.5 Ã 10-3 | 6.2 Ã 10-8 | 3.6 Ã 10-13 |
Sulfuric acid | H2SO4 | very large | 1.2 Ã 10-2 | |
Sulfurous acid | H2SO3 | 1.7 Ã 10-2 | 6.4 Ã 10-8 | |
Zinc ion | Zn(H2O)42+ | 2.5 Ã 10-10 |
Base | Formula | Kb | ||
---|---|---|---|---|
Ammonia | NH3 | 1.8 Ã 10-5 | ||
Aniline | C6H5NH2 | 7.4 Ã 10-10 | ||
Caffeine | C8H10N4O2 | 4.1 Ã 10-4 | ||
Codeine | C18H21O3N | 8.9 Ã 10-7 | ||
Diethylamine | (C2H5)2NH | 6.9 Ã 10-4 | ||
Dimethylamine | (CH3)2NH | 5.9 Ã 10-4 | ||
Ethylamine | C2H5NH2 | 4.3 Ã 10-4 | ||
Hydroxylamine | NH2OH | 9.1 Ã 10-9 | ||
Isoquinoline | C9H7N | 2.5 Ã 10-9 | ||
Methylamine | CH3NH2 | 4.2 Ã 10-4 | ||
Morphine | C17H19O3N | 7.4 Ã 10-7 | ||
Piperidine | C5H11N | 1.3 Ã 10-3 | ||
Pyridine | C5H5N | 1.5 Ã 10-9 | ||
Quinoline | C9H7N | 6.3 Ã 10-10 | ||
Triethanolamine | C6H15O3N | 5.8 Ã 10-7 | ||
Triethylamine | (C2H5)3N | 5.2 Ã 10-4 | ||
Trimethylamine | (CH3)3N | 6.3 Ã 10-5 | ||
Urea | N2H4CO | 1.5 Ã 10-14 |