Silver nitrate solution turns blue when a piece of copper is added to it. This is because of:
Correct answer: C. Oxidation of Cu
- A. Oxidation of Ag
- B. Reduction of Cu
- C. Oxidation of Cu
- D. Reduction of Ag
Explanation
When copper is added to silver nitrate solution, the following reaction takes place:
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About Oxidation and Reduction
Oxidation involves loss of electrons, increase in oxidation number or addition of oxygen, while reduction involves electron gain, decrease in oxidation number or removal of oxygen. The topic covers oxidising and reducing agents, oxidation-number changes, redox equations and the distinction between oxidation at the anode and reduction at the cathode.
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