Filtration is commonly used in which of the following laboratory procedures?

• A. Separating a solid precipitate from a liquid solution
• B. Distilling a mixture to separate volatile components
• C. Determining the molar mass of a gas
• D. Measuring the pH of a solution

Answer: (A)

Verified step by step guidance

1. Understand the purpose of filtration: it is a technique used to separate a solid from a liquid by passing the mixture through a filter that allows only the liquid to pass through while retaining the solid.
2. Analyze each option to see if filtration applies: 'Separating a solid precipitate from a liquid solution' involves removing solid particles from a liquid, which matches the filtration process.
3. Consider 'Distilling a mixture to separate volatile components': this involves heating and condensation, not filtration, so it is not the correct procedure for filtration.
4. Look at 'Determining the molar mass of a gas': this is a measurement process involving gases, unrelated to filtration.
5. Review 'Measuring the pH of a solution': this involves using a pH meter or indicator, not filtration.