When setting up glassware for a vacuum filtration, which of the following steps should you always take?

• A. Use plastic tubing instead of rubber tubing for the vacuum connection.
• B. Add the filter paper after starting the vacuum.
• C. Heat the glassware to ensure it is dry.
• D. Inspect the glassware for cracks or chips before use.

Answer: (D)

Verified step by step guidance

1. Understand the purpose of vacuum filtration, which is to separate solids from liquids efficiently by applying reduced pressure.
2. Recognize that safety and proper equipment condition are crucial; therefore, always inspect glassware for any cracks or chips before use to prevent breakage under vacuum pressure.
3. Know that rubber tubing is typically preferred over plastic tubing for vacuum connections because it provides a better seal and flexibility.
4. Remember to place the filter paper correctly in the funnel before starting the vacuum to ensure proper filtration and avoid damage to the paper or loss of material.
5. Avoid heating glassware unnecessarily before vacuum filtration, as this is not a standard step and could cause damage or safety hazards.