Trying to help a buddy out with this: You place a piece of copper metal into a s

Question

Trying to help a buddy out with this:

You place a piece of copper metal into a solution of zinc nitrate, you then connect the copper metal to the negative post of a 9v battery using a jumper cable and connect a piece of pencil lead to the negative post of the battery. You then dip both into the zinc nitrate solution w/o touching the solids together. Trying to understand what exactly is going on here so an explanation of what exactly occurs with an equation describing the chemical change. Clearest explanation after a couple of hours gets points. Thanks in advance

Explanation / Answer

It is type of displacement reaction:
as we see in the reactivity series, zinc metal is placed above the copper metal.
Because the metals will only displace the ones below it from solution, So we can conclude that zinc would replace copper ions, but copper does not replace zinc ions.

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