Exercise




Exercise
Exercise - Balancing Redox Equations for Reactions Run in Acidic Conditions:   Balance the following redox equations for reactions run in acidic conditions. (The answers are at the bottom of this page.)

a. MnO4-(aq)  +  Br-(aq)  -->  MnO2(s)  +  BrO3-(aq)

b. I2(s)  +  OCl-(aq)  -->  IO3-(aq)  +  Cl-(aq)

c. Cr2O72-(aq)  +  C2O42-(aq)  -->  Cr3+(aq)  +  CO2(g)

d. Mn(s)  +  HNO3(aq)  -->  Mn2+(aq)  +  NO2(g)

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Answers

a. 2MnO4-(aq) + Br-(aq) + 2H+(aq)
                               -->
 2MnO2(s) + BrO3-(aq) + H2O(l)

b. I2(s) + 5OCl-(aq) + H2O(l)  -->  2IO3-(aq) + 5Cl-(aq) + 2H+(aq)

c. Cr2O72-(aq) + 3C2O42-(aq) + 14H+(aq) 
                                    -->
  2Cr3+(aq) + 6CO2(g) + 7H2O(l)

d. Mn(s) + 2HNO3(aq) + 2H+(aq)  -->  Mn2+(aq) + 2NO2(g) + 2H2O(l)

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