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- 1. Multiple Choice
Substances that lose electrons easily and are oxidized in a chemical reaction are ____________.
reducing agents
coloring agents
oxidizing agents
neutralizing agents
analytical agents
- 2. Multiple Choice
A camera film is covered with silver ions that darkens upon exposure to light. The reaction that
takes place is: Ag + + e‾ → Ag. In this reaction, silver ion acts as ____________
reducing agent.
dissolving agent.
analytical agent.
oxidizing agent
- 3. Multiple Choice
During the process of reduction, _________________
protons are lost.
protons are gained.
electrons are lost.
electrons are gained
neutrons are lost.
- 4. Multiple Choice
The change of I‾ to I2 is ________________
oxidation
reduction
neutralization
Decomposition
Combustion
- 5. Multiple Choice
What is the oxidation number of Nitrogen in HNO3
-7
-5
+5
+7
+2
- 6. Multiple Choice
Find the oxidation number of S in S2O4 2-
+3
+6
-6
-3
-4
- 7. Multiple Choice
Determine the oxidation number of the selected element in each ion/ compound.
a) N in N2O4
b) Cr in CrO4 2-
c) I in IO3-
+8, -6, +5
+2, +8, +6
+4, +6, +5
-4, -6, -5
-4, -8, -6
- 8. Multiple Choice
Identify the species reduced in the following reaction.
Fe(s) + 2 Ag+(aq) → Fe2+(aq) + 2 Ag(s)
Fe
Ag
none of these
None of the above
- 9. Multiple Choice
The below reaction is an example of _________reaction.
F2 → 2 F- + 2 e-
Oxidation
Reduction
Neutralization
decomposition
combustion
- 10. Multiple Choice
Find the oxidation number of Ca in CaH2
-2
-4
+2
+4
0
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