Question
- Define the term redox couple. Write the practical application of redox couple.
- Split $2\text{K}\text{(s)}+\text{Cl}_2\text{(g)}\xrightarrow{ \ \ \ \ \ }2\text{KCl}\text{(s)}$ into oxidation and reducton half reaction.
✓
Answer
- Redox couple. It is defined as having together the oxidised and reduced forms of a substance taking part in an oxidation or reduction half reaction e.g. $\frac{\text{Zn}^{2+}}{\text{Zn}}$ and $\frac{\text{Cu}^{2+}}{\text{Cu}}$ form a redoxc couple. application. These are used to make electrochemical cell.
- $2\text{K}\xrightarrow{ \ \ \ \ }2\text{K}^++2\text{e}^-$ (oxidation half reaction)
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