Question

What would you expect to see if a piece of copper metal is placed in a solution that contains nickel(II) ions?
A. Copper atoms become copper(II) ions
B. Nickel ions become solid nickel
C. No reaction happens
D. A precipitate forms that contains copper and nickel ions

Answer 1

Answer:

Direct Redox Reactions

When a strip of zinc metal is placed into a blue solution of copper(II) sulfate ( Figure below ), a reaction immediately begins as the zinc strip begins to darken. If left in the solution for a longer period of time, the zinc will gradually decay due to oxidation to zinc ions. At the same time, the copper(II) ions from the solution are reduced to copper metal (see Figure below ), which causes the blue copper(II) sulfate solution to become colorless.

Reaction of zinc metal in copper sulfate solution.

The process that occurs in this redox reaction is shown below as two separate half-reactions, which can then be combined into the full redox reaction.

Answer 2

Explanation:

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