why does iron not evolve hydrogen with cold water
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it react with hot water to form manganese hydroxide and hydrogen.
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Explanation: It reacts with hot water to form magnesium hydroxide and hydrogen.
It also starts floating due to the bubbles of hydrogen gas sticking to its surface. Metals like aluminium iron and zinc do not react either with cold water or hot water. But they react with the steam to form the metal oxide and hydrogen
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