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JEE Main202226 Jul 2022Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

The number of non-ionisable protons present in the product B obtained from the following reaction is___ C 2 H 5 OH + PCl 3 → C 2 H 5 Cl + A A + PCl 3 → B

Correct answer

0

Step-by-step solution

C 2 H 5 OH + PCl 3 ⟶ C 2 H 5 Cl + H 3 PO 3 H 3 PO 3 + PCl 3 ⟶ H 4 P 2 O 5 + HCl A is H 3 PO 3 ( Phosphorous acid ) The basicity of A is two B is H 4 P 2 O 5 (Pyrophosphorous acid) Structure of H 4 P 2 O 5 is as given below Hydrogen which are directly attached to the phosphorous in the above structure are non-ionisable. The Number of non-ionisable hydrogen atoms are two in the above structure.

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