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In which pair(s) of the following list would boiling occur? AP=atmospheric press

ID: 722454 • Letter: I

Question

In which pair(s) of the following list would boiling occur? AP=atmospheric pressure, VP=vapor pressure. a) AP=760mmHg and VP=700mmHg. b) AP=480 torr and VP=480mmHg. c) AP=1.2 atm and VP=912mmHg. d) AP=1020mmHg and VP=760mmHg. e) AP=740 torr and VP=1.0 atm.

Explanation / Answer

Answer = Pairs (b), (c), (e) Boiling will occur when vapor pressure = atmospheric pressure, or when vapor pressure > than atmospheric pressure (b) does this because 480 torr = 480 mm hg, so boiling will happen here (c) does this because 912 mm hg = 1.2 atm, again AP and VP are equal (e) does this because 740 torr = 0.97 atm, VP is much greater than this so it will boil (a) and (d) don't work because AP > VP