Why do alkali metals become hot in water ?
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Explanation The classic explanation of elemental sodium's volatile reaction with water involves the simple reduction-oxidation chemistry of sodium and water: electrons flow from sodium metal into the surrounding water, forming sodium hydroxide and hydrogen gas. This is a very fast reaction that produces a lot of heat
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Alkali metals are also known to react violently and explosively with water. This is because liberate enough heat during the exothermic reaction to ignite ( catch fire ) the H2.
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