Reaction of Zinc with Acetic Acid
Zinc reacts with acetic acid (vinegar) to produce zinc acetate and hydrogen gas. This reaction is a typical example of a single replacement reaction where the more reactive metal (zinc) replaces the less reactive hydrogen in the acid.

Chemical Equation
Zn(s) + 2CH3COOH(aq) → Zn(CH3COO)2(aq) + H2(g)

Observations
- Bubbles of hydrogen gas are evolved, which can be seen as effervescence.
- The solution turns slightly cloudy due to the formation of zinc acetate.

Explanation
When zinc is added to acetic acid, the zinc atoms displace the hydrogen atoms in the acid to form zinc acetate and hydrogen gas. The hydrogen gas bubbles out of the solution, which is observed as effervescence. Zinc acetate, which is a salt, remains dissolved in the solution. The cloudy appearance of the solution is due to the presence of fine particles of zinc acetate.

Significance
- This reaction demonstrates the reactivity of zinc with acids.
- It is a simple example of a single replacement reaction in chemistry.
- Zinc acetate formed can be further used in various chemical processes.
In conclusion, the reaction of zinc with acetic acid is a straightforward chemical reaction that results in the formation of zinc acetate and hydrogen gas. This reaction is a common demonstration of the reactivity of metals with acids and is used in various applications in the field of chemistry.