An example of two parameter sets for both water (normal boiling point of water is 100 C) and ethanol (normal boiling point of ethanol is 78.32 C) are given below: 99 T max A B I min. C C Water 8.07131 | 1730.63 233.426 1 100 Water 8.14019 1810.94244.485 374 Ethanol 8.20417 1642.89 230.300 -57 80 Ethanol 7.68117 1332.04 199 200 77 243 The constants are given in C and mmHg. (760 mmHg = 101.325 kPa = 1.000 atm = normal pressure) i. Calculate the vapour pressure (atm) of both water and ethanol at a temperature of 30 C. ii. Which component is considered more volatile? iii. How will different volatility affects the permeation rate of the various vapour through the membrane pore