When should you start a new chemical waste container in the lab

Subject : Chemistry

Question: When should you start a new chemical waste container in the lab?

Select one:

A) When you need to dispose of another chemical that is compatible with chemicals in the current container

B) When you accidentally spill chemicals down the side of the current container

C) When the contents of the current container are a couple of inches below the brim of the container

D) When the contents of the current container fill the container to the brim

Expert Verified Solution:

The correct answer is:

C) When the contents of the current container are a couple of inches below the brim of the container

Explanation:

Option C is correct because it is standard laboratory practice to leave some space at the top of a chemical waste container to allow for safe handling, transport, and potential expansion of the contents. Filling a container to the brim can lead to spills, leaks, and unsafe conditions.

Option A is incorrect because you should not add another chemical to a waste container unless you are absolutely certain that it is compatible with the chemicals already in the container. However, even if they are compatible, you should still observe the fill level of the container.

Option B is incorrect because a spill down the side of the container does not necessarily warrant starting a new waste container. However, it would require cleaning up the spill immediately and ensuring that the container is still safe for use.

Option D is incorrect because it is unsafe to fill a waste container to the brim. This leaves no room for safe handling or potential chemical reactions that might cause pressure build-up or spilling. The container should be capped and replaced before it reaches the brim to ensure safe laboratory practices.