Base reaction with metals
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Certain metals such as zinc, aluminum and tin react with alkali solutions on heating and hydrogen gas is evolved.
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Reaction of Base with Metals:
When alkali (base) reacts with metal, it produces salt and hydrogen gas. Example: Sodium hydroxide gives hydrogen gas and sodium zincate when reacts with zinc metal. Sodium aluminate and hydrogen gas are formed when sodium hydroxide reacts with aluminium metal.
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