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Question
How is phosphine prepared using the following reagent?
Caustic soda
Solution
Preparation of Phosphine using Caustic soda (NaOH)
White phosphorus is heated with concentrated NaOH solution in an inert atmosphere of CO2. It is the laboratory method.
`P_4 + 3NaOH+3H_2O -> PH_3 + 3NaH_2PO_2`
White Sodium hydroxide Phosphine Sodium
phosphorus hypophosphite
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