why alkalene metals are prepared by the electrolysis of fuse chloride.
why alkalene metals are prepared by the electrolysis of fuse chloride.
All the alkali metals are very reactive in nature and none of them are obtained in free state. They form oxide peroxide and superoxide on reacting with oxygen and hydroxides on reacting with water.
It is not possible to prepare alkali metals by the chemical reduction of their oxides as they themselves are very strong reducing agents. They cannot be prepared by displacement reactions either (wherein one element is displaced by another). This is because these elements are highly electropositive. Neither can electrolysis of aqueous solutions be used to extract these elements. This is because the liberated metals react with water. Hence, to overcome these difficulties, alkali metals are usually prepared by the electrolysis of their fused chlorides
All the alkali metals are very reactive in nature and none of them are obtained in free state. They form oxide peroxide and superoxide on reacting with oxygen and hydroxides on reacting with water.
It is not possible to prepare alkali metals by the chemical reduction of their oxides as they themselves are very strong reducing agents. They cannot be prepared by displacement reactions either (wherein one element is displaced by another). This is because these elements are highly electropositive. Neither can electrolysis of aqueous solutions be used to extract these elements. This is because the liberated metals react with water. Hence, to overcome these difficulties, alkali metals are usually prepared by the electrolysis of their fused chlorides
