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Beryllium chloride shows acidic nature in water or why BeCl_(2) is easily hydrolysed? |
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Answer» Solution :`BeCl_(2)` is salt of week base `Be(OH)_(2)` and strong ACID `HCL` and thus undergoes hydrolysis to result in an acidic solution in WATER `BeCl_(2)+H_(2)O OVERSET("hydration")(rarr) [Be(H_(2)O)_(2)]^(2+)+2Cl^(-)` Beryllium chloride is acidic when dissolved in pure water because the hydrated IONS hydrolyses producing `H_(3)O^(+)`. the `Be^(2+)` ions are easily hydrated first because of high charge-size ratio. the hydrolysis happens because the `Be-O` bond is very strong and so in the hydrated ion this weakens the `O-H` bonds hence there is a tendency to lose protons. `[Be(H_(2)O)]^(2+)+H_(2)O overset("hydration")(rarr) [Be(H_(2)O)_(3)OH]^(+)+H_(3)^(+)O` |
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