Complete the following equations and state whether they are oxidation or reduction reaction.
Cu - _____ `toCu^(2+)`

Explanation

To complete the equation and determine whether it is an oxidation or reduction reaction, we can follow these steps:

### Step 1: Identify the reactant and product
The given equation is:
\[ \text{Cu} - \_\_\_\_ \rightarrow \text{Cu}^{2+} \]

### Step 2: Determine the change in oxidation state
Copper (Cu) in its elemental form has an oxidation state of 0. In the product, \(\text{Cu}^{2+}\), the oxidation state of copper is +2.
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