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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

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