Phosphine is generally prepared in the laboratory :

Question

Phosphine is generally prepared in the laboratory : (A) By heating phosphorus in a current of hydrogen (B) By heating white phosphorus with an aqueous solution of caustic potash (C) By decomposition of P2H4 at 110°C (D) By heating red phosphorus with an aqueous solution of caustic soda

Tardigrade Admin · Accepted Answer

underset textWhiteP4+3NaOH + 3H O-> underset textPhosphinePH3+ 3NaH2PO2

Q. Phosphine is generally prepared in the laboratory :

By heating phosphorus in a current of hydrogen

By heating white phosphorus with an aqueous solution of caustic potash

By decomposition of $P_{2} H_{4}$ at $11 0^{°} C$

By heating red phosphorus with an aqueous solution of caustic soda

$White P X_{4}$ $+ 3 NaOH + 3 H O$ $Phosphine PH X_{3}$ $+ 3 NaH X_{2} PO X_{2}$