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NTA Abhyas JEE Main2020Chemistryp Block Elements (Group 15, 16, 17 & 18)Practice

White phosphorus on reaction with concentrated NaOH solution in an inert atmosphere of C O 2 gives phosphine and compound (X) . (X) on acidification with H C l gives compound (Y) . The basicity of compound (Y) is

Options

  1. A3
  2. B5
  3. C2
  4. D1

Correct answer

D. 1

Step-by-step solution

Here Hypophosphorus acid is formed as Y and its basicity is 1. P 4 + NaOH + H 2 O → P H 3 + Na H 2 P O 2 → HCl H 3 P O 2 Basicity = 1

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