Florida Wastewater Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Florida Wastewater Exam. Study with multiple choice questions and detailed explanations. Ensure your readiness with our comprehensive test materials!

Practice this question and more.

How many times heavier is chlorine gas compared to air?

1.5 times
2.0 times
2.5 times
3.0 times

The correct answer is: 2.5 times

Chlorine gas is approximately 2.5 times heavier than air. This comparison is based on the molecular weights of chlorine and the average composition of air. The molecular weight of chlorine gas (Cl2) is about 70.9 g/mol, while the average molecular weight of air is about 28.8 g/mol. Thus, when you divide the molecular weight of chlorine by that of air, you get a value around 2.5. This heavier property of chlorine gas is significant in various contexts, such as in environmental safety and wastewater treatment. If chlorine gas is released, its tendency to sink rather than disperse into the atmosphere can create hazardous conditions, necessitating appropriate safety measures during its use or in case of accidental release. Understanding the relative weights of gases is crucial for professionals dealing with wastewater management and gas applications.