Passage II
Primary amines (PAs) are compounds containing an amino (NH2) group bound to a hydrocarbon chain (a group made up of C and H atoms). Table 1 lists, for each of 5 PAs, the chemical formula, molecular mass (mass of 1 molecule) in atomic mass units (amu), melting point (MP), and boiling point (BP).
Table 2 lists, for each of the 5 PAs, the flash point (the lowest temperature at which a flammable mixture is formed in the air above a liquid) and the temperature at which the vapor pressure (the pressure exerted by a vapor in equilibrium with its liquid state) equals 0.1 kPa, 1 kPa, 10 kPa, and 100 kPa.
Tables adapted from W. M. Haynes, ed., CRC Handbook of Chemistry and Physics on CD-ROM, Version 2011. ©2011 by CRC Press, LLC.
9. Based on Table 2, the vapor pressure of 1-pentanamine at 11°C would most likely be:
Your Answer is
Correct Answer is C
Explanation
According to Table 2, when 1-pentanamine is 11°C, it is between 1~43°C, so the vapor pressure is also between the corresponding value 1~10kPa, choose C