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White phosphorus reacts with caustic sod...

White phosphorus reacts with caustic soda. The products are `PH_(3)` and `NaH_(2)PO_(2)`. This reaction is an example of

A

oxidation

B

reduction

C

oxidation and reduction

D

neutralisation.

Text Solution

Verified by Experts

The correct Answer is:
C
`P_4 + 3NaOH + 3H_2O to PH_3 + 3NaH_2PO_2`. In phosphine `(PH_3)`, phosphorus has been reduced from zero to -3 and in sodium hypophosphite `(NaH_2PO_2)`, phosphorus has been oxidised from zero to +1.
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MTG-WBJEE-CHEMISTRY OF NON-METALLIC ELEMENTS AND THEIR COMPOUNDS-WB JEE PREVIOUS YEARS QUESTIONS(CATEGORY 3 : One or More Option Correct Type)
  1. White phosphorus reacts with caustic soda. The products are PH(3) and ...

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  2. white phosphorus P(4) has the following characteristics.

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