Phosphorus, forms two hydrides, phosphine and
diphosphine, P 2 H 4 , being analogous to NH 3 and N 2 H 4 .
Elementary phosphorus reacts with H 2 at 300° C to
form PH 3 . The hydrolysis of metal phosphides is a
convenient route of prepration of PH 3 . White
phosphorus also reacts with hot water to produce phosphine and hypophosphorus acid. Hydrazine, N 2 H 4 , may be viewed as an oxidation product of NH 3 ,and may linked to H 2 O2 which may be viewed as an
oxidation product of H 2 O. It is obtained by oxidising
aqueous ammonia by hypochlorite under boiling in the
presence of glue or gelatin.
NH 3 + NaOCl ⎯→ NH 2 Cl + NaOH
NH 2 Cl + NH 3 ⎯→ N 2 H 4 + HCl
(i)PH5 is not known Because
Text Solution
Verified by ExpertsCHECK THE SOLUTION.
(i)
Sol. To attain the five valent state, d orbital must be
used and hydrogen is not sufficiently electronegative to
make d orbitals contract sufficiently.
(ii)
Sol. NO 2 , brown gas
(iii)
Sol. (X) ≡ Ag 3 P, 3 AgNO 3 (Y) ≡ Ag
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