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Redox Reaction
Quiz 1
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Q.1
Which substance is reduced in the following reaction? NaOH + Li --> LiOH + Na
Li
Na
O
H
Q.2
In the reaction Zn + H--> ZnO2 + H2 which element, if any, is oxidized?
Zn0
Zn+2
O-2
H20
None
Q.3
Oxidation-reduction reactions occur because of the competition between particles for...
protons
neutrons
electrons
positrons
Q.4
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
Q.5
Which change is an oxidation?
FeO to Fe2O3
Fe2O3 to FeO
H2O2 to H2O
H2O to H2
Q.6
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
Q.7
Which equation represents a redox reaction?
NaOH + HNO3 → NaNO3 +H2O
2AgNO3 + Zn → Zn(NO3)2 + 2Ag
2NaCl + Pb(NO3)2 → PbCl2 + 2NaNO3
CaCO3 + 2HCl → CaCl2 + H2O + CO2
0 h : 0 m : 1 s
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