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Question
Choose the disproportionation reaction among the following redox reactions.
Options
\[\ce{3Mg_{(s)} + N2_{(g)} -> Mg3N2_{(s)}}\]
\[\ce{P4_{(s)} + 3NaOH + 3H2O -> PH3_{(g)} + 3NaH2PO2_{(aq)}}\]
\[\ce{Cl2_{(g)} + 2Kl_{(aq)} -> 2KCl_{(aq)} + I2}\]
\[\ce{Cr2O3_{(s)} + 2Al_{(s)} -> Al2O3_{(s)} + 2Cr_{(s)}}\]
Solution
\[\ce{P4_{(s)} + 3NaOH + 3H2O -> PH3_{(g)} + 3NaH2PO2_{(aq)}}\]
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