MIDTERM LAB Flashcards
(98 cards)
1
Q
Metal ion indicator
Red to blue color change
A
Mordant Black II
Eriochrome Black T
Solochrome BlackT
2
Q
Indicator?
Violet to blue
A
Murexide (Ammonium purpurate)
3
Q
indicator?
Violet to Red
A
Cathecol-Violet
4
Q
Indicator?
Blue to yellow
A
Methyl blue
5
Q
indicator?
Blue to grey
A
Thymol blue
6
Q
Indicator?
Red to yellow
A
Alizarin
7
Q
Indicators?
Blue to red
A
Sodium alizarin
sulphonate
8
Q
indicator?
lemon to yellow
A
Xylenol orange
9
Q
Ph range of Mordant black ii
eiriochrome black and solochrome black
A
6-7
10
Q
ph of murexide (ammonium purpurate)
A
12
11
Q
ph range of cathecol-violet
A
8 to 10
12
Q
ph range of methyl blue
A
4 to 5
13
Q
ph range of thymol blue
A
10 to 12
14
Q
ph of alizarin
A
4.3
15
Q
ph of sodium alizarin and sulphonate
A
4
16
Q
ph ranges of xylenol orange
A
1 to 3
4 to 5
5 to 6
17
Q
Metals detected by mordant black ii, eiriochrome blk and solochrome blk
A
Ca, Ba, Mg, Zn, Cd, Mn, Pb, and Hg
18
Q
metals detected by murexide ( ammonium purpurate)
A
Ca, Cu, Co
19
Q
metals detected by cathecol violet
A
Mn, Mg, Fe, Co, and Pb
20
Q
metals detected by methyl blue
A
Pb, Zn, Cd, Hg
21
Q
metals detected by thymol blue
A
Pb, Zn, Cd, Hg
22
Q
metals detected by alizarin
A
Pb, Zn, Co, Mn, Cu
23
Q
Metals detected by Sodium alizarin and sulphonate
A
Al and Thorium
24
Q
Metals detected by Xylenol Orange
A
Bi, Thorium, Pb, Zn, Cd, Hg
25
Masking agents
Cyanide
Triethanolamine
Aluminu Fluoride
Ascorbic Acid
Ammonia
26
ph of cyanide
10
27
ph of triethanolamine
10
28
ph of aluminum fluoride
10 and 6
29
ph of ascorbic acid
2
30
ph of ammonia
10
31
ions masked with cyanide
Cu, Co, Ni, Zn, Cd, Hg, Pt, Pd, Ag, Fe
32
ions masked with triethanolamine
Sn, Al, Fe
33
ions masked with aluminum fluoride
Al, alkaline earth, rare earth Al and Ti
34
ions masked w/ Ascorbic Acid
Cu, Fe, Hg
35
Ion masked with ammonia
Zn
36
Cyanide
Ions titrated with edta
Pb, Mn, Mg, Ca, alkaline earths and rare earths
37
triethanolamine
ions titrated with edta
Zn, Cd, Pb, Mn, rare earths
38
aluminum fluoride
ions titrated with edta
Zn, Cd, Mn, Cu
39
Ascorbic acid
ions titrated with edta
Bi and Th
40
Ammonia
ion titrated with edta
Cd
41
unit used for harness of water
mg/L of CaCO3
42
range of Total hardness of soft
0-30
43
range of moderately soft
30-60
44
range of moderately hard
60-120
45
Range of Hard
120-180
46
range of Very hard water
more than >180
47
term use when a metal ion combines with a molecule which can donate electrons
Complex
48
term used when a complex combines to 2 or more groups that donate electrons
chelate
49
other name for complexation rxn
chelatometry
50
Prep and standardization of edta
Principle:
Titrant:
Analyte
Indicator
Endpoint
Complexation
EDTA
CaCO3
Eriochrome blk T
1st appearance of clear blue
51
Metal is a blank acid
LEWIS
52
Ligand is a blank donor
Metal
53
full name of EDTA
ETHYLENEDIAMINETETRAACETATE
54
EDTA IS ALWAYS A _____ IN TITRATION
TITRANT
55
EDTA FORMS WHAT STABKE COMPLEXES
WATER SOLUBLE
56
4 HIGHLY REACTIVE ALKALI METALS
Li Na, Rb, F, Ce
57
formula for prep and standardization of EDTA
wt of caco3 x 1 edta/1caco3 x MW edta/1000/ ml of edta
58
3 fields edta is used
industrial
cosmetics
medicine
59
edta is a blank stabilizer
food preservative/stabilizer
60
in cosmetics what does edta do
an agent to improve stability in the air
61
uses for edta in medicine
Chelation therapy: Ag and and Pb poisoning
Excess iron removal
Thalassemia
lubricant for root canal in orthodontics
for kidney function and filtration
Preservance in ocular prep and eye drops
Anticoagulant
62
what type of titrations can edta be used
DIrect and residual
63
what cations are involved in hardness of water
Ca and Mg cations
64
what does ca and mg form
insoluble compounds w/ carbonated anions
65
Ca and Mg insoluble compounds w/ carbonated anions is called
Lime
66
too many Ca and Mg can lead to___ formation
limescale
67
HARDNESS OF WATER
PRINCIPLE:
titrant:
analyte
Indicator
Enpoint
complexation
edta
water sample
eriochrome black T
1st appearance of clear blue
68
formula for hardness of water
check notes for answer
69
LEORA
GEROA
LOSS OF ELECTRON, OXIDATION, REDUCING AGENT
GAIN OF ELECTRON REDUCTION, OXIDIZING AGENT
70
yellow to yellow orange solids that are moderately soluble to water and dilutes in acids
soln have a strong yellow color, the tetrahydrate loses water when heated to 180-200
strong oxidizing agent and more stable than standard permanganate soln
ceric sulfate CeSO4
71
prep and standardization of ceric sulfate
principle
titrant
analyte
indicator
endpoint
redox
ceric sulfate
na2so4
none
light yellow
72
prep and standardization of ferrous sulfate
principle
titrant
analyte
indicator
endpoint
redox
ceso4
ferrous sulfate syrup
orthophenanthroline
until color change
73
ferrous sulphate % M and %N formula
nasa notes
74
uses of ferrous sulphate
provides iron for the body to produce RBCs
treats and prevents iron deficiency anemia
hematinic, anti anemic,
75
typically a white or colorless pentahydrate
its solid efforescent crytalline substance dissolves in water
sodium thiosulfate
76
pentahyrate of sodium thiosulfate
Na2s2o3 5 h2o
77
other term for na2s2o3
sodium hyposulfite of hypo
78
na2s2o3 is an antidote for?
cyanide poisoning
79
prep and standrdzn of na2s2o3
principle
analyte
titrant
indicator
endpoint
redox iodometry
standard KIO3
standard Na2s203
starch TS
Disappearance of blue color
80
prep and standrdzn of iodine soln
principle
analyte
titrant
indicator
endpoint
redox iodimetry
standard iodine soln
standard n2s2o3
starch TS
disappearance of blue color
81
iodine solution is for _______ only and a
external use and disinfectant
82
assay of tartar emetic
priciple
titrant
analyte
indicator
endpoint
redox iodimetry
iodine solution
tartar emetic
STARCH TS
blue color
83
its pentahydrate is commonly found in salt and bright blue
cupric sulfate
84
common names of cupric sulfate
blue vitriol
bluestone
vitriol of copper
roman vitriol
85
in medicine cuso4 is used as
fungicide
86
what test is cuso4 used in
fehling's soln and benedict's soln
87
it is a test for reducing sugars
fehling's soln and benedict's soln
88
assay of cuso4
principle
titrant
analyte
indicator
endpoint
redox iodometry
na2s2o3
cuso4 5 h2o
starch TS
1st: golden yellow
2nd disappearance of blue
89
chem formula of ascorbic acid
c6h8o6
90
mw of AA
176.12 g/mol
91
is vit C water soluble
YES
92
used of vit c
antioxidant
prevent and treats common colds and low levels of vit c or SCURVY
increase absorption of iron in GIT
used for chronic iron toxicity
93
this is use for iron toxicity
ASCORBIC ACID/VIT C
94
SIGNS AND SYMPTOMS OF VIT C DEFICIENCY
ANEMIA
BLEEDING GUMS
DECREASE ABILITY OF TO FIGHT INFECTION
DECREASED WOUND HEALING
DRY AND SPLITTING HAIR
EASY BRUISING
95
ASSAY OF AA
principle
analyte
titrant
indicator
endpoint
Iodometry redox rxn using Iodine soln
AA tabs
KbrO3 and Na2s2o3
starch TS
disappearance of blue color
96
%purity formula
mass of pure product/mass of impure product X 100
97
% AA USING M AND N FORMULA
NASA NOTES
98
OTHER FORMULA FOR ASSAY OF AA
WT OF AA SAMPLE(TITER VALUE) X N X FACTOR SAMPLE
