In the benzene scenario, which unit is used to specify pressure?

In the benzene scenario, which unit is used to specify pressure?

• A. Pa
• B. kPa
• C. MPa
• D. psi

Answer: (B)

Pressure is expressed in kilopascals here because kilopascals are the standard SI unit for moderate process pressures. They keep numbers readable—avoiding the clutter of many thousands of pascals—while staying within the typical pressure range you’d expect for benzene handling in many lab and plant scenarios. Using pascals would produce unwieldy figures like 120,000 Pa, and megapascal would imply much higher pressures than are usually involved. Psi is not SI and would require extra conversions, which isn’t necessary in this context. So the natural choice is kilopascals.

Pressure is expressed in kilopascals here because kilopascals are the standard SI unit for moderate process pressures. They keep numbers readable—avoiding the clutter of many thousands of pascals—while staying within the typical pressure range you’d expect for benzene handling in many lab and plant scenarios. Using pascals would produce unwieldy figures like 120,000 Pa, and megapascal would imply much higher pressures than are usually involved. Psi is not SI and would require extra conversions, which isn’t necessary in this context. So the natural choice is kilopascals.