Exercise






Exercise
Exercise - Balance the following redox equations using either the inspection technique or the oxidation number method. Be sure to check that the atoms and the charge are balanced for each. (The answers are at the bottom of this page.)

a. Al(s)  +  MnO2(s)  -->  Al2O3(s)  +  Mn(s)

b. SO2(g)  +  HNO2(aq)  -->  H2SO4(aq)  +  NO(g)

c. HNO3(aq)  +  H2S(aq)  -->  NO(g)  + S(s)  +  H2O(l)

d. Al(s)  +  H2SO4(aq)  -->  Al2(SO4)3(aq)  +  H2(g)

Click here to see the Study Sheet for this task.

Click on the following links to see examples. 

Example 1

Example 2

Example 3

Return to the Balancing Redox Equations Page.

 

 

 

 

 

Answers

a. 4Al(s)  +  3MnO2(s)  -->  2Al2O3(s)  +  3Mn(s)

b. SO2(g)  +  2HNO2(aq)  -->  H2SO4(aq)  +  2NO(g)

c. 2HNO3(aq)  +  3H2S(aq)  -->  2NO(g)  + 3S(s)  +  4H2O(l)

d. 2Al(s)  +  3H2SO4(aq)  -->  Al2(SO4)3(aq)  +  3H2(g)

  bishopmark@comcast.net

Home ] Up ] Study Sheet ] Example #1 ] Example #2 ] Example #3 ] [ Exercise ]