Question

Write out the net ionic equations for the following reactions:

1. Reaction when nitric acid is added to solid copper metal

2. Reaction when sodium hydroxide is added to the above solution ^ (#1)

3. Reaction that occurs when the solution in #2 is heated

4. The reaction that occurs when concentrated hydrochloric acid is added to the solution in #3

5. The reaction that occurs when solid zinc is added to the solution in #4

6. The reaction that occurs in the solution from #5 that serves to convert the left over zinc to a soluble form that can be washed away

Answer 1

Net ionic reaciton include sonly reaccting ions

1. Reaction when nitric acid is added to solid copper metal

2H+(aq) + Cu(s) --> H2(g) + Cu2+(aq)

2. Reaction when sodium hydroxide is added to the above solution ^ (#1)

Cu2+ + 2OH-(aq) --> Cu(OH)2(s)

3. Reaction that occurs when the solution in #2 is heated

Cu(OH)2(s) + heat --> CuO(s)+ H2O(g)

4. The reaction that occurs when concentrated hydrochloric acid is added to the solution in #3

CuO(s) + 2H+(aq) → Cu2+(aq) + H2O(l)

5. The reaction that occurs when solid zinc is added to the solution in #4

Cu2+(aq) + Zn(s) --> Zn2+(aq) + Cu(s)

6. The reaction that occurs in the solution from #5 that serves to convert the left over zinc to a soluble form that can be washed away

Zn2+ + 2OH-= Zn(OH)2(s)