Q.

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

 

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a

Redox reaction ;and 3 and 5  

b

disproportionation reaction; 3 and +3    

c

disproportionation reaction; 3 and +1  

d

redox reaction; +3 and +5  

answer is C.

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Detailed Solution

P 4 +NaOH( aq) PH 3 3 + NaH 2 PO 2 +1  
Oxidation state of P  in PH 3 =3   Oxidation state of   P in NaH 2 PO 2 =+1    
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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