Phosphine cannot be prepared by which of the following rreaction?
White P is heated with NaOH
Red P is heated with NaOH
$C a_{3} P_{2}$ is heated with water
Phosphorus trioxide is boiled with water

Question

Phosphine cannot be prepared by which of the following rreaction-White P is heated with NaOHRed P is heated with NaOHCa-3P-2 is heated with waterPhosphorus trioxide is boiled with water

Toppr Admin · Accepted Answer

Red phosphorous does not reacts with caustic alkalies (NaOH or KOH). Whereas white phosphorus reacts with caustic alkalies to produce phosphine.
$P_{4} w h i t e p h o s p h o r u s + 3 N a O H + 3 H_{2} O \to 3 N a H_{2} P O_{2} s o d i u m h y p o p h o s p h i t e + P H_{3} P h o s p h i n e$
Phosphine is also obtained when calcium phosphide is heated with water.
$C a_{3} P_{2} + 6 H_{2} O \to 2 P H_{3} + 3 C a (O H)_{2}$
Phosphine is also obtained whn phosphorus trioxide is boiled with water.

Phosphine cannot be prepared by which of the following rreaction?White P is heated with NaOHRed P is heated with NaOHCa3P2 is heated with waterPhosphorus trioxide is boiled with water

Phosphine cannot be prepared by which of the following rreaction?
White P is heated with NaOH
Red P is heated with NaOH
$C a_{3} P_{2}$ is heated with water
Phosphorus trioxide is boiled with water