Gasoline vapors are defined as having which combination of vapor pressure and flash point? (reword)

Gasoline vapors are defined as having which combination of vapor pressure and flash point? (reword)

• A. Low vapor pressure and low flash point
• B. High vapor pressure and high flash point
• C. High vapor pressure and low flash point
• D. Low vapor pressure and high flash point

Answer: (C)

Gasoline vapors are highly hazardous because gasoline is very volatile and highly flammable. The key ideas are vapor pressure and flash point. A high vapor pressure means the liquid readily evaporates and produces vapor in the air at or near room temperature. A low flash point means only a small amount of vapor is needed to ignite, so ignition can occur at relatively low temperatures. Put together, gasoline vapors have high vapor pressure and low flash point, making them easy to form and easy to ignite. If a liquid had low vapor pressure, it wouldn’t produce much vapor, reducing the fire hazard; if it had a high flash point, it would require more heat to ignite, also reducing the hazard under normal conditions.

Gasoline vapors are highly hazardous because gasoline is very volatile and highly flammable. The key ideas are vapor pressure and flash point. A high vapor pressure means the liquid readily evaporates and produces vapor in the air at or near room temperature. A low flash point means only a small amount of vapor is needed to ignite, so ignition can occur at relatively low temperatures. Put together, gasoline vapors have high vapor pressure and low flash point, making them easy to form and easy to ignite. If a liquid had low vapor pressure, it wouldn’t produce much vapor, reducing the fire hazard; if it had a high flash point, it would require more heat to ignite, also reducing the hazard under normal conditions.