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WorksheetsREDOX REACTION
Total questions: 20
Worksheet time: 29mins
What is the oxidation number of H in H2O?
-1
+1
+2
-2
What is the oxidation number for O2
-2
-1
0
+2
What is the oxidation state of Cu in Cu2+?
-1
-2
+2
0
What is the oxidation state of phosphorous in Mg3(PO4)2
+2
+3
+4
+5
Oxidation number of H in NaH:
0
+1
-1
+2
Oxidation number of Fe in Fe2O3:
0
-2
+2
+3
Oxidation number of O in the compound H2O2:
0
-1
-2
+2
What type of reaction is this: C2H2 becomes C2H6
Reduction
Oxidation
Neither
Combustion
What type of reaction is this: SF4 becomes SF6
Hydrogenation
Reduction
Oxidation
None of the above
For the following example, identify the reducing agent:
H2 + Cl2 --> 2HCl
H2
Cl2
Both
2Al(s) + 6H+(aq) −−−> 2Al3+ (aq) + 3H2(g)
2Al(s) + 6H+(aq) −−−> 2Al3+ (aq) + 3H2(g)
NaOH + Li --> LiOH + Na
2CaO--> 2Ca + O2
Cl2 + 2e- --> 2Cl - is an example of:
a chemical reaction
redox
oxidation
reduction
WRITE THIS OUT ON PAPER, YOU MAY USE THE ANSWER TO THIS PROBLEM AGAIN IN ANOTHER QUESTION:
Balance the following ACIDIC reactions using the half-reaction method.
MnO4−(aq) + H+(aq) + I− (aq) → Mn2+(aq) + I2(s)
Water is a product of this reaction. What is the coefficient of water in the final balanced equation?
8
5
2
16
Balance the following half-equations for reactions that occur in acidic solution:
BrO3− + I− → Br2 + I2
2BrO3− + 10I− + 6H+ → Br2 + 5I2 + 3H2O
2BrO3− + 10I− + 12H+ → Br2 + 5I2 + 6H2O
BrO3− + 10I− + 14H+ → Br2 + 5I2 + 7H2O
BrO3− + 5I− + 12H+ → Br2 + 3I2 + 6H2O
Balance the following half-equations for reactions that occur in acidic solution :
Zn + VO2+ + H+ → V3+ + H2O + Zn2+
Zn + 2VO2+ + 4H+ → Zn2+ + 2V3+ + 2H2O
Zn + VO2+ + 4H+ → Zn2+ + V3+ + 2H2O
Zn + 2VO2+ + 2H+ → Zn2+ + 2V3+ + H2O
2Zn + 2VO2+ + 4H+ → Zn2+ + 2V3+ + 2H2O
Balance the following redox equations for reactions that occur in neutral solution:
Fe3+ + I− → Fe2+ + I2. :
Fe3+ + 2I− → Fe2+ + 2I2
Fe3+ + I− → Fe2+ + I2
2Fe3+ + I− → 2Fe2+ + I2
2Fe3+ + 2I− → 2Fe2+ + I2
