Which of the following statements are correct with reference to the following reaction?
$ \text{Zn}(s)+\text{Cu}^{2+}(aq)\rightarrow\text{Zn}^{2+}(aq)+\text{Cu}(s) $
(A) The reduction reaction is $ \text{Cu}^{2+}(aq)+2e^{-}\rightarrow\text{Cu}(s) $
(B) The oxidation reaction is $ \text{Zn}(s)\rightarrow\text{Zn}^{2+}(aq)+2e^{-} $
(C) The two half (oxidation and reduction) reactions constitute redox couple.
(D) The given reaction is not a redox reaction.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A), (B) and (C) only
$ \text{Cu}^{2+}+2e^{-}\rightarrow\text{Cu}(s) $ is the reduction half-reaction ($ \text{Cu}^{2+}$ gains electrons).
$ \text{Zn}(s)\rightarrow\text{Zn}^{2+}+2e^{-} $ is the oxidation half-reaction ($Zn$ loses electrons).
These half-reactions represent the redox couples $\text{Cu}^{2+}/Cu$ and $\text{Zn}^{2+}/Zn$, so together they form the redox process.
False — the overall reaction is a classic redox reaction.