White phosphorus, when heated with conc. NaOH solution in an inert atmosphere of CO2, forms phosphine and a sodium salt of oxoacid of phosphorus 'X'. The oxidation state of phosphorus in 'X' is

Question

White phosphorus, when heated with conc. NaOH solution in an inert atmosphere of CO2, forms phosphine and a sodium salt of oxoacid of phosphorus 'X'. The oxidation state of phosphorus in 'X' is (A) +3 (B) +4 (C) +1 (D) +5

Tardigrade Admin · Accepted Answer

White phosphorus, when heated with conc.

N a O H

solution in an inert atmosphere of

C O_{2}

forms phosphine and a sodium salt of oxoacid of phosphorus, i.e.

N a H_{2} P O_{2}

.

The reaction is as follows:

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

Now, the oxidation of phosphorus in

N a H_{2} P O_{2}

can be calculated as:

(+ 1) + 2 (+ 1) + x + 2 (- 2) = 0

\Rightarrow x = + 1

Thus, the oxidation of

P

in

N a H P O_{2}

is

+ 1

.

Q. White phosphorus, when heated with conc. NaOH solution in an inert atmosphere of CO2​, forms phosphine and a sodium salt of oxoacid of phosphorus ′X′. The oxidation state of phosphorus in ′X′ is

+3

+4

+1

+5

Q. White phosphorus, when heated with conc. $N a O H$ solution in an inert atmosphere of $C O_{2}$ , forms phosphine and a sodium salt of oxoacid of phosphorus $^{'} X^{'}$ . The oxidation state of phosphorus in $^{'} X^{'}$ is