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QC 1 LEC & LAB > MIDTERM LAB > Flashcards

MIDTERM LAB Flashcards

1
Q

Metal ion indicator
Red to blue color change

A

Mordant Black II
Eriochrome Black T
Solochrome BlackT

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2
Q

Indicator?
Violet to blue

A

Murexide (Ammonium purpurate)

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3
Q

indicator?
Violet to Red

A

Cathecol-Violet

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4
Q

Indicator?
Blue to yellow

A

Methyl blue

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5
Q

indicator?
Blue to grey

A

Thymol blue

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6
Q

Indicator?
Red to yellow

A

Alizarin

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7
Q

Indicators?
Blue to red

A

Sodium alizarin
sulphonate

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8
Q

indicator?
lemon to yellow

A

Xylenol orange

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9
Q

Ph range of Mordant black ii
eiriochrome black and solochrome black

A

6-7

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10
Q

ph of murexide (ammonium purpurate)

A

12

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11
Q

ph range of cathecol-violet

A

8 to 10

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12
Q

ph range of methyl blue

A

4 to 5

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13
Q

ph range of thymol blue

A

10 to 12

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14
Q

ph of alizarin

A

4.3

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15
Q

ph of sodium alizarin and sulphonate

A

4

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16
Q

ph ranges of xylenol orange

A

1 to 3
4 to 5
5 to 6

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17
Q

Metals detected by mordant black ii, eiriochrome blk and solochrome blk

A

Ca, Ba, Mg, Zn, Cd, Mn, Pb, and Hg

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18
Q

metals detected by murexide ( ammonium purpurate)

A

Ca, Cu, Co

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19
Q

metals detected by cathecol violet

A

Mn, Mg, Fe, Co, and Pb

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20
Q

metals detected by methyl blue

A

Pb, Zn, Cd, Hg

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21
Q

metals detected by thymol blue

A

Pb, Zn, Cd, Hg

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22
Q

metals detected by alizarin

A

Pb, Zn, Co, Mn, Cu

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23
Q

Metals detected by Sodium alizarin and sulphonate

A

Al and Thorium

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24
Q

Metals detected by Xylenol Orange

A

Bi, Thorium, Pb, Zn, Cd, Hg

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25
Q

Masking agents

A

Cyanide
Triethanolamine
Aluminu Fluoride
Ascorbic Acid
Ammonia

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26
Q

ph of cyanide

A

10

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27
Q

ph of triethanolamine

A

10

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28
Q

ph of aluminum fluoride

A

10 and 6

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29
Q

ph of ascorbic acid

A

2

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30
Q

ph of ammonia

A

10

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31
Q

ions masked with cyanide

A

Cu, Co, Ni, Zn, Cd, Hg, Pt, Pd, Ag, Fe

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32
Q

ions masked with triethanolamine

A

Sn, Al, Fe

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33
Q

ions masked with aluminum fluoride

A

Al, alkaline earth, rare earth Al and Ti

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34
Q

ions masked w/ Ascorbic Acid

A

Cu, Fe, Hg

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35
Q

Ion masked with ammonia

A

Zn

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36
Q

Cyanide
Ions titrated with edta

A

Pb, Mn, Mg, Ca, alkaline earths and rare earths

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37
Q

triethanolamine
ions titrated with edta

A

Zn, Cd, Pb, Mn, rare earths

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38
Q

aluminum fluoride
ions titrated with edta

A

Zn, Cd, Mn, Cu

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39
Q

Ascorbic acid
ions titrated with edta

A

Bi and Th

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40
Q

Ammonia
ion titrated with edta

A

Cd

41
Q

unit used for harness of water

A

mg/L of CaCO3

42
Q

range of Total hardness of soft

A

0-30

43
Q

range of moderately soft

A

30-60

44
Q

range of moderately hard

A

60-120

45
Q

Range of Hard

A

120-180

46
Q

range of Very hard water

A

more than >180

47
Q

term use when a metal ion combines with a molecule which can donate electrons

A

Complex

48
Q

term used when a complex combines to 2 or more groups that donate electrons

A

chelate

49
Q

other name for complexation rxn

A

chelatometry

50
Q

Prep and standardization of edta
Principle:
Titrant:
Analyte
Indicator
Endpoint

A

Complexation
EDTA
CaCO3
Eriochrome blk T
1st appearance of clear blue

51
Q

Metal is a blank acid

A

LEWIS

52
Q

Ligand is a blank donor

A

Metal

53
Q

full name of EDTA

A

ETHYLENEDIAMINETETRAACETATE

54
Q

EDTA IS ALWAYS A _____ IN TITRATION

A

TITRANT

55
Q

EDTA FORMS WHAT STABKE COMPLEXES

A

WATER SOLUBLE

56
Q

4 HIGHLY REACTIVE ALKALI METALS

A

Li Na, Rb, F, Ce

57
Q

formula for prep and standardization of EDTA

A

wt of caco3 x 1 edta/1caco3 x MW edta/1000/ ml of edta

58
Q

3 fields edta is used

A

industrial
cosmetics
medicine

59
Q

edta is a blank stabilizer

A

food preservative/stabilizer

60
Q

in cosmetics what does edta do

A

an agent to improve stability in the air

61
Q

uses for edta in medicine

A

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
Q

what type of titrations can edta be used

A

DIrect and residual

63
Q

what cations are involved in hardness of water

A

Ca and Mg cations

64
Q

what does ca and mg form

A

insoluble compounds w/ carbonated anions

65
Q

Ca and Mg insoluble compounds w/ carbonated anions is called

A

Lime

66
Q

too many Ca and Mg can lead to___ formation

A

limescale

67
Q

HARDNESS OF WATER
PRINCIPLE:
titrant:
analyte
Indicator
Enpoint

A

complexation
edta
water sample
eriochrome black T
1st appearance of clear blue

68
Q

formula for hardness of water

A

check notes for answer

69
Q

LEORA
GEROA

A

LOSS OF ELECTRON, OXIDATION, REDUCING AGENT
GAIN OF ELECTRON REDUCTION, OXIDIZING AGENT

70
Q

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

A

ceric sulfate CeSO4

71
Q

prep and standardization of ceric sulfate
principle
titrant
analyte
indicator
endpoint

A

redox
ceric sulfate
na2so4
none
light yellow

72
Q

prep and standardization of ferrous sulfate
principle
titrant
analyte
indicator
endpoint

A

redox
ceso4
ferrous sulfate syrup
orthophenanthroline
until color change

73
Q

ferrous sulphate % M and %N formula

A

nasa notes

74
Q

uses of ferrous sulphate

A

provides iron for the body to produce RBCs
treats and prevents iron deficiency anemia
hematinic, anti anemic,

75
Q

typically a white or colorless pentahydrate
its solid efforescent crytalline substance dissolves in water

A

sodium thiosulfate

76
Q

pentahyrate of sodium thiosulfate

A

Na2s2o3 5 h2o

77
Q

other term for na2s2o3

A

sodium hyposulfite of hypo

78
Q

na2s2o3 is an antidote for?

A

cyanide poisoning

79
Q

prep and standrdzn of na2s2o3
principle
analyte
titrant
indicator
endpoint

A

redox iodometry
standard KIO3
standard Na2s203
starch TS
Disappearance of blue color

80
Q

prep and standrdzn of iodine soln
principle
analyte
titrant
indicator
endpoint

A

redox iodimetry
standard iodine soln
standard n2s2o3
starch TS
disappearance of blue color

81
Q

iodine solution is for _______ only and a

A

external use and disinfectant

82
Q

assay of tartar emetic
priciple
titrant
analyte
indicator
endpoint

A

redox iodimetry
iodine solution
tartar emetic
STARCH TS
blue color

83
Q

its pentahydrate is commonly found in salt and bright blue

A

cupric sulfate

84
Q

common names of cupric sulfate

A

blue vitriol
bluestone
vitriol of copper
roman vitriol

85
Q

in medicine cuso4 is used as

A

fungicide

86
Q

what test is cuso4 used in

A

fehling’s soln and benedict’s soln

87
Q

it is a test for reducing sugars

A

fehling’s soln and benedict’s soln

88
Q

assay of cuso4
principle
titrant
analyte
indicator
endpoint

A

redox iodometry
na2s2o3
cuso4 5 h2o
starch TS
1st: golden yellow
2nd disappearance of blue

89
Q

chem formula of ascorbic acid

A

c6h8o6

90
Q

mw of AA

A

176.12 g/mol

91
Q

is vit C water soluble

A

YES

92
Q

used of vit c

A

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
Q

this is use for iron toxicity

A

ASCORBIC ACID/VIT C

94
Q

SIGNS AND SYMPTOMS OF VIT C DEFICIENCY

A

ANEMIA
BLEEDING GUMS
DECREASE ABILITY OF TO FIGHT INFECTION
DECREASED WOUND HEALING
DRY AND SPLITTING HAIR
EASY BRUISING

95
Q

ASSAY OF AA
principle
analyte
titrant
indicator
endpoint

A

Iodometry redox rxn using Iodine soln
AA tabs
KbrO3 and Na2s2o3
starch TS
disappearance of blue color

96
Q

%purity formula

A

mass of pure product/mass of impure product X 100

97
Q

% AA USING M AND N FORMULA

A

NASA NOTES

98
Q

OTHER FORMULA FOR ASSAY OF AA

A

WT OF AA SAMPLE(TITER VALUE) X N X FACTOR SAMPLE

QC 1 LEC & LAB (3 decks)

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