1.

Give two equations to illustrate the chemical behaviour of phosphine.

Answer»

Solution :(i) Phosphine reacts with halogens to GIVE phosphorous penta halides.
`PH_(3)+4Cl_(2)rarr PCl_(5)+3HCl`
(ii) Phosphine forms coordination compound with lewis ACIDS such as boron trichloride.
`BCl_(3)+PH_(3)rarr underset("Coordination compound")([Cl_(3)Blarr :PH_(3)])`
(iii) Phosphine precipitates some METAL from their salt solutions.
`3AgNO_(3)+PH_(3)rarr Ag_(3)P+3HNO_(3)`


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