Question

Which of the following is an example of a solid solution?

• A. Camphor in N$_2$ gas
• B. Oxygen gas in water
• C. Ethanol in water
• D. Amalgam of mercury with sodium

Answer 1

The Correct Option is D

Amalgam represents a solid solution as mercury dissolves other metals, maintaining a solid phase.

Answer 2

Amalgam represents a solid solution where mercury dissolves other metals, forming a homogeneous mixture while maintaining a solid phase. This process occurs when mercury, a liquid metal at room temperature, interacts with other metals to form alloys. In this case, mercury can dissolve metals such as silver, gold, or tin, creating an amalgam that remains solid despite the presence of liquid mercury.

The key feature of an amalgam is that it behaves like a solid, even though one of its components (mercury) is liquid. This property is a result of the specific interaction between mercury and the metals it dissolves. These alloys exhibit unique characteristics, such as improved hardness or corrosion resistance, which makes them valuable in various applications, such as dental fillings, gold extraction, and electrical switches.

Because amalgams are typically used in dental work, it is important to understand their composition and properties. Despite their usefulness, precautions must be taken when handling mercury due to its toxicity. Therefore, amalgams must be properly managed to ensure both safety and efficiency in their applications.