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Chemistry · REDOX REACTIONS
हिन्दीIn the redox reaction: \( 2\text{Cu}_2\text{O}(\text{s}) + \text{Cu}_2\text{S}(\text{s}) \rightarrow 6\text{Cu}(\text{s}) + \text{SO}_2(\text{g}) \), how many moles of electrons are transferred per mole of \( \text{SO}_2(\text{g}) \) formed?
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Correct answer · Option A
\( 6\text{ mol} \)
Explanation
Sulfur in \( \text{Cu}_2\text{S} \) is oxidised from \( -2 \) to \( +4 \) in \( \text{SO}_2 \), corresponding to a loss of \( 6\text{ mol } e^- \). Simultaneously, \( 6\text{ mol} \) of \( \text{Cu}^+ \) gain \( 1e^- \) each (total \( 6\text{ mol } e^- \)) to form \( 6\text{ mol} \) of \( \text{Cu}^0 \).
