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InterviewSolution
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Which of the following is hydrolysed to give white precipitate of oxychloride?A. `NCl_(3)`B. `PCl_(3)`C. `BiCl_(3)`D. `AsCl_(3)` |
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Answer» Correct Answer - 3 Tricholrides readily undergo hydrolysis but the products of hydrolysis depends on the nature of the elements: `NCl_(3)+3H_(2)OrarrNH_(3)+3HOCl` `PCl_(3)+3H_(2)OrarrH_(3)PO_(3)+3HCl` `AsCl_(3)+3H_(2)OrarrH_(3)AsO_(3)+3HCl` In contrast the trichlorides of `Sb` and`Bi` are only partly and reversibly hydrolysed to give `HCl` and oxychlorides of the corresponding metal. `SbCl_(3)+H_(2)O hArr underset("oxychloride")underset("Antimony")(SbO^(+) Cl^(-))+2HCl` `BiCl_(3)+H_(2)O hArr underset(("white ppt"))underset("oxychloride")underset("Bismuth")(BiO^(+)Cl^(-))+2HCl` In accordance with`Le` Chatelier principle the addition of excess of `HCl`suuppresses the hydrolysis by shifting the equilibrium to the left. |
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