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.
8. According to Tables 1 and 2, the PA that has a flash point of −1°C at 101.3 kPa has a molecular mass of:
Your Answer is
Correct Answer is H
Explanation
The flash point in Table 2 is -1, which can confirm that PA is 1-pentanamine, and the PA molecule mass in Table 1 is 87, choose H