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What Happens When Magnesium Metal Reacts with Hydrochloric Acid?

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Detailed Solution

When magnesium reacts with hydrochloric acid, magnesium chloride and hydrogen gas are formed.

Chemical Equation

The balanced chemical reaction is:

Mg (s) + 2HCl (aq) → MgCl₂ (aq) + H₂ (g)

Explanation of Reaction

Magnesium is an active metal and readily reacts with acids.
When it comes in contact with hydrochloric acid, it displaces hydrogen ions.
This produces magnesium chloride, which dissolves in water, and hydrogen gas is released as bubbles.

Observation During Reaction

Effervescence (bubbling) occurs due to hydrogen gas.
Heat is released, so the test tube becomes warm.
The magnesium strip gradually dissolves.

Products Formed

Product	Nature
Magnesium chloride (MgCl₂)	Colorless salt solution
Hydrogen gas (H₂)	Released as bubbles

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