What is//are not true abut phosphine `(PH_(3))`?

Options

A. It turns red litmus blue
B. It reacts with HCl (aq.) to give `PH_(4)Cl`
C. Phosphonium compounds are obtained when anhydrous phosphine reacts with anhydrous HBr or HI
D. It is prepared by hydrolysis of metal phosphides with acids

Answer

A, B

Explanation

(A) `PH_(3)` is a lewis base but is neutral towards red litmus
(B) It does not react with HCl (aq) or HI(aq). This is because water decomposes `PH_(4)X` formed to given back `PH_(3)`
(C) It reacts only with anhydrous HI or HBr
(D) `2Na_(3)P + 3H_(2)SO_(4) rarr 3Na_(2)SO_(4) + 2PH_(3) uarr, Ca_(3)P_(2) + 6HCl rarr 3CaCl_(2) + 2PH_(3)`