. Write the Properties of Phosphine
i. It is a colourless gas with a slightly garlic or rotten fish smell and is highly poisonous. It explodes in contact with traces of oxidising agents like HNO3 , Cl2 and Br2 vapours.
ii. mIt is slightly soluble in water but soluble in CS2 and other organic solvents. The solution of PH3 in water decomposes in presence of light giving red phosphorus and H2.
iii. When absorbed in copper sulphate or mercuric chloride, the corresponding phosphides are obtained.
iv. Phosphine on heating at 150ºC burns forming H3PO4
v. Phosphonium compounds are obtained when anhydrous phosphine reacts with anhydrous halogen acids (not in aqueous solution).