What is one method of scavenging waste gases in a laboratory setting?

The correct answer indicates that both active and passive scavenging methods can be employed to manage waste gases in a laboratory setting. Active scavenging involves the use of mechanical systems, such as fume hoods or gas scrubbing systems, to continuously remove and filter waste gases from the environment. This method is beneficial in ensuring that harmful gases are expelled efficiently, reducing the risk of exposure to laboratory personnel.

On the other hand, passive scavenging relies on natural processes, such as ventilation and diffusion, to disperse gases in the laboratory. This approach generally requires less energy than active methods and can be effective in smaller or well-ventilated spaces.

Choosing both methods showcases an understanding that effective gas scavenging can be enhanced by integrating multiple techniques depending on the specific requirements of the laboratory environment, the types of substances being used, and the scale of operations. Each method has its advantages, and utilizing both can ensure better safety and compliance with health regulations in a lab setting.