Light Flashes from Oxidation
Click on the correct answer.
1
The two liquids in the test tube at the beginning of the demonstration were
water on the bottom
ethanol on the bottom
sulfuric acid on the bottom
ethanol on the top
sulfuric acid on the top
2
Potassium permanganate
is a purple compound
is a green compound
was formed in the demonstration
was added to the test tube to do the demonstration
3
The dimanganate ion
was added to the test tube
was formed during the demonstration
is what formed in the ethanol
is what formed in the sulfuric acid
was the oxidizing agent for the ethanol
4
The oxidation product of ethanol in this demonstration
was not seen
was permanganate
was dimanganate
was acetic acid
5
Potassium permanganate was
more dense than ethanol
less dense than ethanol
the same density as ethanol
6
Since ethanol was oxidized to acetic acid
ethanol has fewer oxygen atoms in it than does acetic acid
acetic acid has fewer oxygen atoms in it than does ethanol
both compounds have the same number of oxygen atoms
neither compound has any oxygen atoms in it
7
Oxidations include
combustion of paper
detoxification by the body
conversion of ethanol to acetic acid
8
Polyatomic ions include
bicarbonate ion
permanganate ion
potassium ion
charged groups of atoms
9
The energy product of thereaction in this demonstration is
heat
light
acetic acid
dimanganate
10
This demonstration is not very reliable because
the ethanol was too pure
the potassium permanganate was not pure
the sulfuric acid was impure
there was water in the ethanol