Oxidation-Reduction Answers
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1
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Which of the following is a simple definition of oxidation?
A
the loss of electronsB
the gain of electronsC
an agent that oxidizes somethingD
an agent that reduces something2
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Which describes the oxidizing agent in a chemical reaction?
A
the substance that is oxidized because it loses electronsB
the substance that is reduced because it loses electronsC
the substance that is oxidized because it gains electronsD
the substance that is reduced because it gains electrons3
Which identifies an oxidation-reduction reaction?
A
a double replacement reactionB
a neutralization reactionC
a reaction in which oxidation numbers changeD
a reaction in which no electrons are transferred4
Which of the following is an oxidation-reduction reaction?
A
Fe2O3 + 3CO 2Fe + 3CO2
B
CuSO4 + 2NaOH Cu(OH)2 + Na2SO4
C
2NaOH + H2CO3 Na2CO3 + 2NaOH
D
Pb(NO3)2 + Na2SO4 2NaNO3 + PbSO4
5
Which type of reaction occurs in the following?2HgO(s) 2Hg(l) + O2(g)
A
a decomposition reaction in which a metal is reducedB
an acid-base neutralization reaction to produce oxygen gasC
a displacement reaction involving two metalsD
a combustion reaction involving burning a metal in oxygen6
Consider the following reaction.CO2(g) + H2(g) CO(g) + H2O(l) What is being oxidized?
A
carbonB
carbon dioxideC
oxygenD
hydrogen7
Which of the following is an oxidation-reduction reaction?
A
ZnS(s) + 2O2(g) ZnSO4(s)
B
CaO(s) + H2O(l) Ca(OH)2(s)
C
6Li2O(s) + P4O10(g) 4Li3PO4(s)
D
SO2(g) + H2O(l) H2SO3(aq)
8
Which of the following is true about a redox reaction?
A
In a redox reaction, the reducing agent loses electrons.B
In a redox reaction, the oxidizing agent loses electrons.C
In a redox reaction, the oxidized species gains electrons.D
In a redox reaction, the reduced species loses electrons.9
Given the reaction below, which is being reduced?Mg + Cl2 Mg2+ + 2Cl–
A
2CI–B
CI2C
MgD
Mg2+10
Which answer best describes what is happening in the following reaction?2C8H18 + 25O2 16CO2 + 18H2O
A
This is not a redox reaction. It is an example of combustion.B
This is a redox reaction in which octane (C8H18) is the reducing agent.C
This is a redox reaction in which carbon dioxide (CO2) burns due to ignition.D
This is not a redox reaction, because a solution of carbon dioxide and water results.Did you find these answers helpful?
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