White phosphorus can be separated from red phosphorus by________.

Question

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Answer 1

White phosphorus is soluble in organic solvents such as $C S_{2}$ , $C C l_{4}$ .
Red phosphorus is insoluble in such solvents. Hence, white phosphorus can be separated from red phosphorus by dissolving in $C S_{2}$ or $a n C C l_{4}$ .
White phosphorus reacts with caustic alkalies ( $N a O H$ and $K O H$ ).
Red phosphorus does not react with caustic alkalies ( $N a O H$ and $K O H$ ).
Hence, white phosphorus can be separated from red phosphorus by heating with an alkali solution.

White phosphorous is boiled with aqueous $N a O H$ solution to obtain phosphine.
$P_{4} + 3 N a O H + 3 H_{2} O \to 3 N a H_{2} P O_{2} + P H_{3}$

Answer 2

White phosphorus is soluble in organic solvents such as

C S_{2}

,

C C l_{4}

.
Red phosphorus is insoluble in such solvents. Hence, white phosphorus can be separated from red phosphorus by dissolving in

C S_{2}

or

a n C C l_{4}

.
White phosphorus reacts with caustic alkalies (

N a O H

and

K O H

).
Red phosphorus does not react with caustic alkalies (

N a O H

and

K O H

).
Hence, white phosphorus can be separated from red phosphorus by heating with an alkali solution.

White phosphorous is boiled with aqueous

N a O H

solution to obtain phosphine.

P_{4} + 3 N a O H + 3 H_{2} O \to 3 N a H_{2} P O_{2} + P H_{3}

White phosphorus can be separated from red phosphorus by________.

sublimation

dissolving in $C S_{2}$

distillation

heating with alkali solution

White phosphorus $(P_{4})$ has :

Statement $-$ 1 : White phosphorus is less stable where as red phosphorus is more stable.

Statement $-$ 2 : White phosphorus exist as individual $P_{4}$ having more strained geometery while red phosphorus has $P_{4}$ tetrahedron structure linked together.

The order of densities of the various allotropes of phosphorus is as follows:
black phosphorus, red phosphorus, white phosphorus.

As tendency of polymerisation increases, the compactness of substance also increases.

Red phosphorus is less volatile than white phosphorus

Red phosphorus has a discrete tetrahedral structure

Red phosphorus is less volatile than white phosphorus

Atoms in $P_{4}$ molecule of white phosphorus are arranged regularly in the following way :

Revise with Concepts

Phosphorus and its Allotropes

White phosphorus can be separated from red phosphorus by________.

sublimation

dissolving in CS2​

distillation

heating with alkali solution

White phosphorus (P4​) has :

Statement − 1 : White phosphorus is less stable where as red phosphorus is more stable.

Statement − 2 : White phosphorus exist as individual P4​ having more strained geometery while red phosphorus has P4​ tetrahedron structure linked together.

The order of densities of the various allotropes of phosphorus is as follows: black phosphorus, red phosphorus, white phosphorus.

As tendency of polymerisation increases, the compactness of substance also increases.

Red phosphorus is less volatile than white phosphorus

Red phosphorus has a discrete tetrahedral structure

Red phosphorus is less volatile than white phosphorus

Atoms in P4​ molecule of white phosphorus are arranged regularly in the following way :

Revise with Concepts

Phosphorus and its Allotropes

dissolving in $C S_{2}$

White phosphorus $(P_{4})$ has :

Statement $-$ 1 : White phosphorus is less stable where as red phosphorus is more stable.

Statement $-$ 2 : White phosphorus exist as individual $P_{4}$ having more strained geometery while red phosphorus has $P_{4}$ tetrahedron structure linked together.

The order of densities of the various allotropes of phosphorus is as follows:
black phosphorus, red phosphorus, white phosphorus.

Atoms in $P_{4}$ molecule of white phosphorus are arranged regularly in the following way :