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