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Question

The reaction of white phosphorus with aqueous NaOH gives phosphine along with another phosphorus containing compound. The reaction type, the oxidation states of phosphorus in phosphine and the other product are, respectively :

A
redox reaction; 3 and 5
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B
redox reaction; +3 and +5
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C
disproportionation reaction; 3 and +1
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D
disproportionation reaction; 3 and +3
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Solution

The correct option is C disproportionation reaction; 3 and +3
The reaction of white phosphorus with aqueous NaOH gives phosphine along with another phosphorus containing compound. The reaction type, the oxidation states of phosphorus in phosphine and the other product are disproportionation reaction, 3 and +3, respectively.
P4+3NaOH+3H2O3NaH2PO2Sodium hypophosphite+PH3phosphine

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