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1. Write the molecular balanced equation for the dissolution of copper. 2. Write

ID: 580525 • Letter: 1

Question

1. Write the molecular balanced equation for the dissolution of copper. 2. Write the complete ionic balanced equation for the dissolution of copper. 3. Write the net ionic balanced equation for the dissolution of copper. 4. What type of reaction is this? 5. Write the molecular balanced equation for the preparation of copper(II) hydroxide. 6. Write the complete ionic balanced equation for the preparation of copper(l) hydroxide. 7. Write the net ionic balanced equation for the preparation of copperI) hydroxide. 8. What type of reaction is this?

Explanation / Answer

Q1

it goes from solid copper to aqueous copper:

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

Q2

complete ionic:

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

Q3

net ionic, must include only reacting species, so

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

Q4

this type of reaction is Dissolutino reaction

Q5

Preparation of Cu(OH)2(s)

Cu2+(aq) + 2NaOH-(aq) =  Cu(OH)2(s) + 2Na+(aq)

Q6

Cu2+(aq) + 2Na+ + 2OH-(aq) =  Cu(OH)2(s) + 2Na+(aq)

Q7

net ionic:

Cu2+(aq) +  2OH-(aq) =  Cu(OH)2(s)

Q8

this is percipitation reaction, a solid Cu(OH)2(s) is formed