Question

Method of Phosphine preparation​

Answer 1

Answer:

hey mate here is ur answer

chemical formula of this compound is ph3

hope it will help you

thankyu

Answer 2

$\huge\underline\green{Phosphine}$

Method Of Preparation Of Phosphine (PH3):-

• Phosphine is prepared by the reaction of calcium phosphide with water :-

$\large{Ca_{3}P_{2}+6H_{2}O-->3Ca(OH)_{2}+2PH_{3}}$

• In laboratory it is prepared by heating white phosphorus with concentrated NaOH solution in an inert atmosphere of $\large{CO_{2}}$

$\large{P_{4}+3NaOH+3H_{2}O-->PH_{3}+3NaH_{2}PO_{2}}$

• When pure, it is non inflammable but becomes inflammable owing to the presence of $\large{P_{2}H_{4}}$ or $\large{P_{4}}$ vapours . To purify it from the Impurities, it is absorbed in HI to form phosphonium iodide $\large{PH_{4}I}$ which on treating with KOH gives off Phosphine .

$\large{PH_{4}I+KOH-->KI+H_{2}O+PH_{3}}$

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