Chemistry, asked by abhi2355, 8 months ago

How will you obtain---------✅ phosphine from white phosphorus?✅ ❌please answer and do say any think..please...❌​

Answers

Answered by azamkaladgi786
0

Explanation:

Phosphine is made industrially from white phosphorus by hydrolysis with an alkali metal hydroxide or an aqueous acid–catalyzed disproportionation reaction. The industrial product is normally shipped as liquefied gas.

Answered by chnaidu1969
2

Explanation:

Calcium phosphide is mixed with water or dilutes HCl. This results in the formation of phosphine.

Ca3P2 + 6H2O → 3Ca(OH)2 + 2PH3

Ca3P2 + 6HCl → 3CaCl2 + 2PH3

In the laboratory white phosphorous is heated with concentrated sodium hydroxide solution in an inert atmosphere of CO2 to form phosphine.

P4 + 3NaOH + 3H2O → PH3 + 3NaH2PO2

It is usually obtained by boiling white phosphorus with 30-40% solution of caustic soda in an inert atmosphere of CO2.

P4 + 3NaOH + 3H2O → PH3 + 3NaH2PO2 (Sodium hypophosphite)

Phosphine so obtained is impure. It is passed into an aqueous solution of hydrogen iodide, PH4I is formed. PH4I is heated with KOH or NaOH, pure phosphine is obtained.

PH3 + HI → PH4I

PH4I + NaOH → PH3 + NaI + H2O

In this method, phosphine is prepared by hydrolyzing white phosphorus with a concentrated solution of sodium hydroxide.

Phosphine so obtained is impure. It is passed into an aqueous solution of hydrogen iodide, PH4I is formed. PH4I is heated with KOH or NaOH, pure phosphine is obtained.

Similar questions