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When white phosphorus () is treated with a concentrated aqueous solution of Sodium hydroxide () uponp Block Elements Chemistry Question

Question

When white phosphorus ($P_4$) is treated with a concentrated aqueous solution of Sodium hydroxide ($NaOH$) upon warming, a disproportionation reaction occurs. What are the major products formed?

Answer: B

💡 Solution & Explanation

White phosphorus undergoes disproportionation in boiling alkaline solution to yield Phosphine gas ($PH_3$, oxidation state -3) and Sodium hypophosphite ($NaH_2PO_2$, oxidation state +1).

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