In the reaction , phosphorus is: — Redox Reactions and Volumetric Analysis Chemistry Question
Question
In the reaction $P_4 + 3NaOH + 3H_2O \rightarrow PH_3 + 3NaH_2PO_2$, phosphorus is:
Answer: C
💡 Solution & Explanation
In $P_4$, O.S. = 0. In $PH_3$, O.S. = -3 (reduction). In $NaH_2PO_2$, O.S. = +1 (oxidation). Since the same element phosphorus is both oxidized and reduced, it undergoes disproportionation.
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