If a product with a vapor density of 1.6 escaped, you would expect the product to:

If a product with a vapor density of 1.6 escaped, you would expect the product to:

• A. Rise and disperse upward
• B. Intermix with air at mid-level
• C. Collect in low-lying areas
• D. Dissolve in water

Answer: (C)

Vapor density tells you whether a vapor will tend to rise or sink relative to air. A density of 1.6 means the vapor is 60% heavier than air, so it will settle and pool in the lowest parts of an area—basements, depressions, along the floor, or low-lying ground. That’s why the vapor would be expected to collect in low-lying areas. It wouldn’t rise to the ceiling like a lighter-than-air vapor, and mid-level mixing isn’t the expected behavior for a heavier-than-air release. Dissolving in water is about solubility, not where the vapor tends to accumulate in air, so the primary distribution pattern here is pooling in low areas.

Vapor density tells you whether a vapor will tend to rise or sink relative to air. A density of 1.6 means the vapor is 60% heavier than air, so it will settle and pool in the lowest parts of an area—basements, depressions, along the floor, or low-lying ground. That’s why the vapor would be expected to collect in low-lying areas. It wouldn’t rise to the ceiling like a lighter-than-air vapor, and mid-level mixing isn’t the expected behavior for a heavier-than-air release. Dissolving in water is about solubility, not where the vapor tends to accumulate in air, so the primary distribution pattern here is pooling in low areas.