What is the product formed when magnesium reacts with silver acetate?
The Correct Answer and Explanation is :
When magnesium reacts with silver acetate (AgC₂H₃O₂), the primary products formed are magnesium acetate (Mg(C₂H₃O₂)₂) and silver (Ag). The balanced chemical equation for this reaction is:
[
\text{Mg} + 2 \text{AgC}_2\text{H}_3\text{O}_2 \rightarrow \text{Mg(C}_2\text{H}_3\text{O}_2\text{)}_2 + 2 \text{Ag}
]
Explanation
Reaction Overview:
Magnesium, a reactive alkaline earth metal, tends to lose two electrons to form a divalent ion (Mg²⁺). Silver acetate consists of silver ions (Ag⁺) and acetate ions (C₂H₃O₂⁻). When magnesium is added to silver acetate, it displaces silver from the acetate due to magnesium’s higher reactivity. This type of reaction is classified as a single displacement reaction.
Mechanism of the Reaction:
- Electron Transfer: Magnesium donates two electrons, allowing it to form magnesium ions (Mg²⁺).
- Displacement of Silver: The Ag⁺ ions are displaced by Mg²⁺ ions due to the greater reactivity of magnesium. The acetate ions remain in the solution and combine with magnesium ions to form magnesium acetate.
- Formation of Silver Metal: The displaced silver ions are reduced to metallic silver (Ag), which may precipitate out of the solution or remain suspended depending on the reaction conditions.
Properties of the Products:
- Magnesium Acetate: This compound is a colorless or white solid that is soluble in water. It is often used in various applications, including as a food additive and in the production of certain pharmaceuticals.
- Silver: The metallic silver produced in the reaction can appear as a gray or white solid, and it is often valued for its conductivity, malleability, and use in jewelry and electronics.
Applications:
This reaction can be of interest in laboratories or industrial processes where silver recovery or the production of metal acetates is needed. Understanding these reactions is crucial in fields like inorganic chemistry and materials science, where metal ions’ reactivity and properties are essential.