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JEE Main202311 Apr 2023Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

One mole of P 4 reacts with 8 moles of SOCl 2 to give 4 moles of A , x mole of SO 2 and 2 moles of B . A , B and x respectively are

Options

  1. APOCl 3 ,   S 2 Cl 2 and 2
  2. BPCl 3 ,   S 2 Cl 2 and 4
  3. CPCl 3 ,   S 2 Cl 2 and 2
  4. DPOCl 3 ,   S 2 Cl 2 and 4

Correct answer

B. PCl 3 ,   S 2 Cl 2 and 4

Step-by-step solution

Thionyl chloride reacts with white phosphorus to produce phosphorus trichloride. The other side products in this reaction are sulphur dioxide and Sulphur monochloride. P 4 + 8 SOCl 2 → 4 PCl 3 + 4 SO 2 + 2 S 2 Cl 2 Hence A = PCl 3 ,   x = 4 ,   B = S 2 Cl 2

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