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Give brief explanations on hydroxides of alkali metals. |
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Answer» Solution : Oxides of alkali metals are easily hydrolysed by WATER to form hydroxides. `M_(2)O+H_(2)O to 2M^(+) +2OH^(+)` `M_(2)O_(2)+2H_(2)O to 2M^(+) +2OH^(-)+H_(2)O_(2)` `2MO_(2)+2H_(2)O to 2M^(+) +2OH^(-) +H_(2)O_(2)+O_(2)` The hydroxides which are obtained by the reaction of the oxides with water are all white crystalline SOLIDS. The alkali metal hydroxides are the strongest of all bases and DISSOLVE freely in water with evolution of much heat on account of intense hydration. |
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