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Question
How is phosphine prepared using the following reagent?
Caustic soda
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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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