Why metals are not react with hot water as well as cold water?
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Sodium metal reacts violently with water. The reaction is so violent and exothermic that the evolved hydrogen immediately catches fire. The reaction is:2Na + H2O → 2NaOH + H2 + heat energyii. Hot water:Magnesium reacts with hot water to form magnesium hydroxide and hydrogen. The reaction is:Mg + 2H2O → Mg(OH)2 + H2iii. Steam:Aluminium does not react either with cold or hot water. It reacts with steam to form the aluminium oxide (Al2O3) and hydrogen. The reaction is:2Al + 3H2O → Al2O3 + 3H2Metals such as lead, copper, silver, and gold do not react with water at all.