Chemistry

Oxidation and Reduction Practice Problems

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Problem 1
 Identify the species oxidized, the species reduced, the oxidizing agent and the reducing agent in the following electron transfer reaction. As the reaction proceeds, electrons are transferred from  ___ to ___.
 Cl2 + Mg -> 2Cl- + Mg2+
Problem 2
 Identify the species oxidized, the species reduced, the oxidizing agent and the reducing agent in the following electron transfer reaction. As the reaction proceeds, electrons are transferred from  ___ to ___.
 2Cr3+ + 3Mg  -> 2Cr + 3Mg2+
Problem 3
 6HClO + 2Cr3+ + H2O -> 3Cl2 + Cr2O72- + 8H+
 In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent.
Problem 4
 Pb + Cu2+ -> Pb2+ + Cu
 In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent.
Problem 5
 SnO32- + N2H4+ H2O ->  SnO22- + 2NH2OH
 In the above reaction, the oxidation state of tin changes from ___ to ___.
 How many electrons are transferred in the reaction?
Problem 6
 6NO3- + Br- + 6H+ ->  6NO2 + BrO3- + 3H2O
 In the above reaction, the oxidation state of bromine changes from ___ to ___. How many electrons are transferred in the reaction?

Categories: Chemistry

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