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15 questions
What element is being Oxidized?
N+5
H+1
O-2
S-2
What element is being Reduced?
N+5
H+1
O-2
S-2
What element is being Oxidized?
I0
H+1
S+4
O-2
What element is being reduced?
I0
H+1
S+4
O-2
In the reaction Zn + H2O --> ZnO2 + H2
which element, if any, is oxidized?
Zn0
Zn+2
O-2
H20
None
Cl2 + 2e- --> 2Cl - is an example of:
a chemical reaction
redox
oxidation
reduction
An increase in oxidation number.
more acidic
reduction
less basic
oxidation
A decrease in oxidation number.
redox
reduction
oxidation
dilute
Oxidation-reduction reactions occur because of the competition between particles for...
protons
neutrons
electrons
positrons
Mg + PbCl2 --> MgCl2 + Pb. Which statement correctly describes the oxidation and reduction that occur?
Mg is oxidized and Cl- is reduced
Mg is oxidized and Pb+2 is reduced
Mg is reduced and Cl- is oxidized
Mg is reduced and Pb+2 is oxidized
As an element is oxidized, its oxidation number...
increases as electrons are gained
decreases as electrons are gained
decreases as electrons are lost
increases as electrons are lost
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