Question

why is hydrogen gas liberated when metal reacts with water and not when metal oxide reacts with water ?
please answer ​

Answer 1

Answer:

Some metals react with water and produce metal oxides or hydroxides and liberate hydrogen gas. Metals like sodium and potassium react violently with cold water. However, calcium reacts less violently with cold water because it is less reactive as compared to Na and K Magnesium does not react with cold water.

Answer 2

Explanation:

Some metals react with water and produce metal oxides or hydroxides and liberate hydrogen gas. Metals like sodium and potassium react violently with cold water. However, calcium reacts less violently with cold water because it is less reactive as compared to Na and K. Magnesium does not react with cold water. It reacts with hot water to form magnesium hydroxide and hydrogen gas. Metals like aluminium, iron and zinc do not react with cold as well as hot water but they react with steam to form metal oxide and hydrogen gas.

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