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State physical and chemical properties of phosphine (PH_(3)) |
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Answer» Solution :(i) PHYSICAL properties : `PH_3` is colourless gas with rotten fish smell and is highly poisonous. It is SPARINGLY soluble in water. Chemical properties : Phosphine explodes in contact with traces of oxidizing agents like `HNO_(3), Cl_2` and `Br_2` vapours. The solution of phosphine in water decomposes in presence of LIGHT giving red phosphorus and `H_2`. When absorbed in COPPER sulphate or mercuric chloride solution, the corresponding phosphides are obtained: `3CuSO_(4) + 2PH_(3) to Cu_(3)P_(2) + 3H_(2)SO_(4)` `3HgCl_(2) + 2PH_(3) to Hg_(3)P_(2) + 6HCl` Phosphine is weakly basic and like ammonia it gives phosphonium compounds with acids, e.g., `PH_(3) + HBr to underset("Phosphonium BROMIDE")(PH_(4)Br)` |
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