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Question:
doesn't magnesium form magnesium oxide when dissolved in water
Answer:

Hi there,

Please take a look at the answer below:

 

When magnesium reacts with hot water, it forms magnesium hydroxide and hydrogen.

Mg + 2H2O à Mg (OH)2 + H2

 

Magnesium does not react with cold water as it gets a coating of insoluble magnesium hydroxide, hence preventing water from coming into contact with magnesium.

 

Thanks and Regards

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