1.

The reaction of white phosphorus iwht aqueous NaOH gives phosphine along with another phosphorus containing compund. The oxidation states of phosphorus in phosphine and the other product are respectively

Answer»

REDOX reaction,-3 and -5
redox reaction,+3 and +5
disproportionation reactions,-3 and +5
disproportionation reaction, -3 and+3

Solution :(None is correct)
white phosphorus reacts with NaOH in an inert atmosphere as FOLLOWS :
`P_(4)+3NaOH+3H_(2)Orarr3NaH_(2)PO_(2) +PH_(3)`
O.S of P in `NaH_(2)PO_(2),+1+2(+1)+x+2(-2)=0`
or x+3-4=0, x==4-3=+1
O.S of P in `PH_(3),x+3(+1)=0,x=-3`
The values donot match with any of CHOICES given in the various options.This MEANS that none of the options is correct.


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