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[1ST YEAR] PH 105 - Pharmaceutical Analysis I (Lec) > MIDTERM 02 - Redox Titrations > Flashcards

MIDTERM 02 - Redox Titrations Flashcards

1
Q

Reactions that involve transfer of electrons; occurs between a reducing and oxidizing agent

A

Redox reactions

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2
Q

A strong oxidizing agent with an intense violet color

A

Potassium permanganate

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3
Q

Type of titration - Standardization of 0.1 N KMnO4

A

Direct titration

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4
Q

Type of reaction - Standardization of 0.1 N KMnO4

A

Redox reaction

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5
Q

Analyte/reducing agent - Standardization of 0.1 N KMnO4

A

Sodium oxalate (Na2C2O4)

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6
Q

Titrant/oxidizing agent - Standardization of 0.1 N KMnO4

A

Potassium permanganate (KMnO4)

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7
Q

Acidifying agent - Standardization of 0.1 N KMnO4

A

Sulfuric acid (H2SO4)

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8
Q

Factor of analyte - Standardization of 0.1 N KMnO4

A

2

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9
Q

Indicator -Standardization of 0.1 N KMnO4

A

None (KMnO4 is a self-indicator)

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10
Q

Color transition - Standardization of 0.1 N KMnO4

A

Colorless to pale pink

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11
Q

Used as a reducing agent; it is a colorless acid

A

Oxalic acid

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12
Q

Is a mild, fast acting, oxidizing germicide

A

Hydrogen peroxide topical solution USP

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13
Q

Type of titration - Assay of hydrogen peroxide (H2O2)

A

Direct titration

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14
Q

Analyte - Assay of hydrogen peroxide (H2O2)

A

Hydrogen peroxide (H2O2)

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15
Q

Titrant - Assay of hydrogen peroxide (H2O2)

A

Potassium permanganate (KMnO4)

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16
Q

Acidifying agent - Assay of hydrogen peroxide (H2O2)

A

Sulfuric acid (H2SO4)

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17
Q

Factor of analyte - Assay of hydrogen peroxide (H2O2)

A

2

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18
Q

Type of titration - Assay of cherry juice for malic acid (C4H6O5)

A

Indirect titration

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19
Q

Type of reaction - Assay of cherry juice for malic acid (C4H6O5)

A

Redox reaction

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20
Q

Analyte/reducing agent - Assay of cherry juice for malic acid (C4H6O5)

A

Malic acid (C4H6O5)

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21
Q

Titrant/oxidizing agent - Assay of cherry juice for malic acid (C4H6O5)

A

Potassium permanganate (KMnO4)

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22
Q

Acidifying agent - Assay of cherry juice for malic acid (C4H6O5)

A

Sulfuric acid (H2SO4)

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23
Q

Type of titration - Assay of sodium nitrite (NaNO2)

A

Double residual titration

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24
Q

Type of reaction - Assay of sodium nitrite (NaNO2)

A

Redox reaction

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25
Analyte/reducing agent - Assay of sodium nitrite (NaNO2)
Sodium nitrite (NaNO2)
26
Excess titrant/oxidizing agent - Assay of sodium nitrite (NaNO2)
Potassium permanganate (KMnO4)
27
Acidifying agent - Assay of sodium nitrite (NaNO2)
Sulfuric acid (H2SO4)
28
Backtitrant/reducing agent - Assay of sodium nitrite (NaNO2)
Oxalic acid (H2C2O4)
29
Factor of analyte - Assay of sodium nitrite (NaNO2)
2
30
Precipitated calcium carbonate - type of titration (Permanganometry)
Indirect titration
31
Precipitated manganese dioxide - type of titration (Permanganometry)
Indirect titration
32
Dibasic calcium phosphate - type of titration (Permanganometry)
Indirect titration
33
Titanium dioxide (with blank determination) - type of titration (Permanganometry)
Indirect titration
34
Potassium permanganate tablets - type of titration (Permanganometry)
Residual titration
35
Lead oxide (with preliminary treatment) - type of titration (Permanganometry)
Residual titration
36
Strong oxidizing agent and considerably more stable than KMnO4 in acid medium
Cerium (IV) sulfate [Ce(SO4)2]
37
Used as an indicator in cerimetry
Orthophenanthroline TS
38
Acidifying medium - Standardization of 0.1 N Ce(SO4)2
Sulfuric acid (H2SO4) and hydrochloric acid (HCl)
39
Primary standard - Standardization of 0.1 N Ce(SO4)2
Sodium oxalate (Na2C2O4)
40
Heat requirement - Standardization of 0.1 N Ce(SO4)2
70°-75°C
41
Heat requirement - Standardization of 0.1 N KMnO4
60°-70°C
42
Type of titration - Standardization of 0.1 N Ce(SO4)2
Direct titration
43
Color transition - Standardization of 0.1 N Ce(SO4)2
Colorless to pale yellow
44
Factor of analyte - Standardization of 0.1 N Ce(SO4)2
2
45
Type of reaction - Assay of ferrous sulfate tablets (FeSO4.7H2O)
Redox reaction
46
Type of titration - Assay of ferrous sulfate tablets (FeSO4.7H2O)
Direct titration
47
Indicator - Assay of ferrous sulfate tablets (FeSO4.7H2O)
Orthophenanthroline TS
48
Color transition - Assay of ferrous sulfate tablets (FeSO4.7H2O)
Colorless to permanent pink color
49
Factor of analyte - Assay of ferrous sulfate tablets (FeSO4.7H2O)
1
50
Ferrous sulfate - type of titration (Cerimetry)
Direct titration (w/ blank determination)
51
Ferrous fumarate - type of titration (Cerimetry)
Direct titration (w/ blank determination)
52
Ferrous gluconate oral solution - type of titration (Cerimetry)
Direct titration (w/ blank determination)
53
Ferrous gluconate tablets (with preliminary treatment) - type of titration (Cerimetry)
Direct titration (w/ blank determination)
54
Hydroquinone - type of titration (Cerimetry)
Direct titration (w/ blank determination)
55
Menadione - type of titration (Cerimetry)
Direct titration (w/ blank determination)
56
Ringer's solution for KCl content - type of titration (Cerimetry)
Residual titration
57
Direct titration of reducing substances using iodine (I2) as volumetric standard
Iodimetry
58
Indirect titration of oxidizing substances reduced by excess iodide to liberate I2
Iodometry
59
Indicator of choice in iodimetry and iodometry because it forms an intense blue complex with iodine
Starch
60
2 types of starch
Soluble starch, Insoluble starch
61
includes β-amylose
Soluble starch
62
Includes α-amylose and amylopectin
Insoluble starch
63
Is a molecule of repeating sugar units joined by α-1,4 linkage
Amylose
64
Has both α-1,4-glycosidic bonds and α-1,6 bonds to branches
Amylopectin
65
Iodimetry or iodometry - Standardization of 0.1 N Iodine (I2)
Iodimetry
66
Type of chemical reaction - Standardization of 0.1 N Iodine (I2)
Redox reaction
67
Factor - Standardization of 0.1 N Iodine (I2)
2
68
Type of titration - Standardization of 0.1 N sodium thiosulfate (Na2S2O3)
Direct iodometry
69
Type of reaction -Standardization of 0.1 N sodium thiosulfate (Na2S2O3)
Redox reaction
70
Analyte/oxidizing agent - Standardization of 0.1 N sodium thiosulfate (Na2S2O3)
Potassium dichromate (K2Cr2O7)
71
Titrant/reducing agent - Standardization of 0.1 N sodium thiosulfate (Na2S2O3)
Sodium thiosulfate (Na2S2O3)
72
Acidifying agent - Standardization of 0.1 N sodium thiosulfate (Na2S2O3)
Hydrochloric acid (HCl)
73
Reducing agent for K2Cr2O7 - Standardization of 0.1 N sodium thiosulfate (Na2S2O3)
Potassium iodide (KI)
74
Indicator - Standardization of 0.1 N sodium thiosulfate (Na2S2O3)
Starch TS
75
Color transition - Standardization of 0.1 N sodium thiosulfate (Na2S2O3)
Blue to colorless
76
Factor - Standardization of 0.1 N sodium thiosulfate (Na2S2O3)
6
77
Antimony potassium tartrate - type of titration (Iodimetry)
Direct titration
78
Antimony potassium tartrate - Iodimetry or Iodometry
Iodimetry
79
Dimercaprol - type of titration (Iodimetry)
Direct titration
80
Dimercaprol - Iodimetry or Iodometry
Iodimetry
81
Sodium ascorbate - type of titration (Iodimetry)
Direct titration
82
Sodium ascorbate - Iodimetry or Iodometry
Iodimetry
83
Sodium thiosulfate - type of titration (Iodimetry)
Direct titration
84
Sodium thiosulfate - Iodimetry or Iodometry
Iodimetry
85
Sulfur dioxide - type of titration (Iodimetry)
Direct titration
86
Sulfur dioxide - Iodimetry or Iodometry
Iodimetry
87
Isoniazid - type of titration (Iodimetry)
Residual titration
88
Isoniazid - Iodimetry or Iodometry
Iodimetry
89
Mild mercurous chloride - type of titration (Iodimetry)
Residual titration
90
Mild mercurous chloride - Iodimetry or Iodometry
Iodimetry
91
Methionine - type of titration (Iodimetry)
Residual titration
92
Methionine - Iodimetry or Iodometry
Iodimetry
93
Arsanilic acid - type of titration (Iodometry)
Direct titration
94
Arsanilic acid - Iodimetry or Iodometry
Iodometry
95
Chromic chloride - type of titration (Iodometry)
Direct titration
96
Chromic chloride - Iodimetry or Iodometry
Iodometry
97
Cupric sulfate (with blank determination) - type of titration (Iodometry)
Direct titration
98
Cuprous sulfate (with blank determination) - Iodimetry or Iodometry
Iodometry
99
Selenium sulfide (with blank determination) - type of titration (Iodometry)
Direct titration
100
Selenium sulfide (with blank determination) - Iodimetry or Iodometry
Iodometry
101
Sodium hypochlorite solution - type of titration (Iodometry)
Direct titration
102
Sodium hypochlorite solution - Iodimetry or Iodometry
Iodometry
103
Thyroid - type of titration (Iodometry)
Direct titration
104
Thyroid - Iodimetry or Iodometry
Iodometry
105
Sodium borohydride - type of titration (Iodometry)
Residual titration
106
Sodium borohydride - Iodimetry or Iodometry
Iodometry

[1ST YEAR] PH 105 - Pharmaceutical Analysis I (Lec) (12 decks)

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