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Explain why halides of beryllium fume in moist air but those of barium do not. |
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Answer» Solution :`BeCl_(2)` being a salt of a weak base , `Be(OH)_(2)` and a strong acid , HCl undergoes hydrolysis by water to FORM HCl which fumes in air. `BaCl_(2)` , on the other hand , being a salt of a strong base , `Ba(OH)_(2)` and strong acid , HCl does not undergo hydrolysis by water to form HCl and hence does not fume in air . `BeCl_(2) + 2H_(2)O to Be(OH)_(2) + 2HCl, BaCl_(2) + 2H_(2)O to Ba(OH)_(2) + 2HCl` |
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