In the electrolysis of NaNO3, Na+ is:
Correct answer: C. Do not discharge
- A. Discharged at anode
- B. Discharge at cathode
- C. Do not discharge
- D. None of these options is correct
Explanation
At Cathode Sodium is not discharged but H2 gas is discharged. Sodium remains in the solution and more H2 gas is formed at the end of electrolysis.
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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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