If vapors in a closed container are heated, what happens to the vapor volume?

Prepare for the Hazardous Materials Technician test with our practical questions and quizzes. Gain confidence in handling hazardous materials through comprehensive questioning for your certification exam.

Multiple Choice

If vapors in a closed container are heated, what happens to the vapor volume?

Explanation:
When vapors are heated, their molecules gain kinetic energy and move faster, pushing apart from one another and against the container walls. If the gas can expand or if there’s headspace, this extra motion causes the vapor to occupy more volume, so the vapor volume increases. In a completely rigid, full container, the actual volume of vapor can’t change and pressure would rise instead, but the question focuses on the tendency for the vapor to expand when heated. Condensing or reacting would involve losses of vapor, not expansion, so they don’t describe what happens to vapor volume with heating.

When vapors are heated, their molecules gain kinetic energy and move faster, pushing apart from one another and against the container walls. If the gas can expand or if there’s headspace, this extra motion causes the vapor to occupy more volume, so the vapor volume increases. In a completely rigid, full container, the actual volume of vapor can’t change and pressure would rise instead, but the question focuses on the tendency for the vapor to expand when heated. Condensing or reacting would involve losses of vapor, not expansion, so they don’t describe what happens to vapor volume with heating.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy