1.

Which of the following reactions can evolve PH_3

Answer»

white `P + NaOH rarr`
`AlP + H_(2)O rarr `
`H_(3) PO_(4) OVERSET(Delta)rarr `
`PH_(4)I +NaOH rarr `

Solution :(a) `P_(4) +3NaOH +3H_2O rarr 3NaH_2PO_2+ul(PH)_3`
(B) `AlP +3H_(2)O rarr Al(OH)_3+ul(PH)_3`
(c) `2H_3PO_4 rarr 3H_2O+P_(2)O_5`
(d) `PH_(4)I +NaOH rarr NaI+H_(2)O+ul(PH)_3`


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