excess Mg ribbon
excess cold water
very hot water
steam
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The given reaction is:
Mg + H2O → MgO + H2
In this reaction, magnesium (Mg) reacts with water (H2O) to produce magnesium oxide (MgO) and hydrogen gas (H2). However, this reaction occurs only under specific conditions.
Magnesium is a fairly reactive metal, but it does not react with water at room temperature or with cold water. The reason is that magnesium quickly forms a protective oxide layer on its surface when exposed to air, which prevents further reaction with water.
To overcome this barrier and make the reaction happen, the water needs to be in the form of steam. Steam can provide enough energy to break the oxide layer and allow the magnesium to react with water. So, the correct condition for this reaction to take place is in the presence of steam (Option D).
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I totally disagree.
When magnesium reacts with hot water, magnesium hydroxide and hydrogen are formed.
The answer is C.
