Phosphine i.e. $P H_{3}$ , is prepared by _________.

C a_{3} P_{2} + H_{2} O \to

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

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None is correct

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Solution

The correct option is B Both are correct
Phosphine is prpared by the hydrolysis of calcium phosphide with water.
$C a_{3} P_{2} + 6 H_{2} O \to 2 P H_{3} + 3 C a (O H)_{2}$ .
It is also prepared by boiling white phosphorus with aqueous sodium hydroxide solution.
$P_{4} + 3 N a O H + 3 H_{2} O \to 3 N a H_{2} P O_{2} + P H_{3}$ .

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Similar questions

B + N a O H \to 2 N a_{3} B O_{3} + H_{2}

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

S + N a O H \to N a_{2} S_{2} O_{3} + N a_{2} S + H_{2} O

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

P_{4} + O H^{-} + H_{2} O \to H_{2} P O_{2}^{-} + P H_{3}

P_{4} + O H^{-} + H_{2} O \to H_{2} P O_{2} + P H_{3}

Phosphine when heated in the absence of air decomposes into $P_{4} a n d H_{2} O$ - True of False?

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