AP Chemistry
4.9 Oxidation-Reduction (Redox) Reactions
4.7 Types of Chemical Reactions
A student evaluates zinc granules as a low-cost method for recovering copper from wastewater. The student places clean \(\text{Zn(s)}\) in a solution containing \(\text{Cu}^{2+}\text{(aq)}\). After several minutes, chemical analysis confirms that \(\text{Cu(s)}\) has formed and \(\text{Zn}^{2+}\text{(aq)}\) is present. The process is represented by the following equation.
\[ \text{Zn(s)}+\text{Cu}^{2+}\text{(aq)}\rightarrow\text{Zn}^{2+}\text{(aq)}+\text{Cu(s)} \]
Which choice correctly states whether \(\text{Zn(s)}\) displaces \(\text{Cu}^{2+}\text{(aq)}\) and explains the electron-transfer reason?
\[ \text{Zn(s)}+\text{Cu}^{2+}\text{(aq)}\rightarrow\text{Zn}^{2+}\text{(aq)}+\text{Cu(s)} \]
Which choice correctly states whether \(\text{Zn(s)}\) displaces \(\text{Cu}^{2+}\text{(aq)}\) and explains the electron-transfer reason?
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