1
Q
Indicator for Edta
A
Eriochrome Black T
2
Q
What does Edta stand for
A
Ethylenediaminetetraacetic acid
3
Q
Colour Change of Eriochrome Black T
A
Red/wine to blue
4
Q
What pH buffer is needed for Eriochrome Black T
A
pH buffer 10
5
Q
Why was it important to avoid trapping air
bubbles in BOD titration
A
More oxygen would be dissolved
Inaccurate results
6
Q
What was added to the BOD
A
Concentrated manganese (II) sulfate
Concentrated alkaline potassium iodide
Concentrated sulfuric acid
7
Q
How is dissolved oxygen in water counted
A
Winkler Method
8
Q
What happened after the concentrated sulfuric acid was added to water
A
A precipitate is dissolved and the solution turns brown
9
Q
Indicator for BOD
A
Starch
10
Q
Colour Change for BOD
A
Red/brown to colourless
Chemistry
flashcards
Decks in class (26)
# Cards
-
Introduction2
-
Chapter 20: Electrochemistry17
-
Chapter 19: Water17
-
Chapter 135
-
Radioactivity5
-
Q5 Questions24
-
Instrumentation28
-
Chapter 2 - Atoms12
-
Chapter 3 - Electrons in the Atom26
-
Clove Oil9
-
Saponification12
-
Chapter 234
-
Chapter 58
-
Organic Chemistry25
-
Chapter 15 - Oxidation-Reduction14
-
Chapter 10 - Properties Of Gases23
-
Q4 Questions75
-
Chapter 1-4 Chem Definitions23
-
Chapter 5,11, 24: Chem Definitions29
-
Rates Of Raction1
-
Chapter 21 - Fuels and Heats of Reaction22
-
Chapter 2234
-
Water Titration10
-
Redox Titrations18
-
Acid-Base Titrations11
-
Q2 Questions11
