gas phase - 2024 ACF Nationals

Question

The strongest superbases are formed in this state by collisions during mass spec. For 10 points each:

[10e] Name this state of matter in which molecules are far enough apart to be free of solvent effects.

ANSWER: gas phase [or gaseous; accept gas-phase acidity gas-phase basicity or gas phase proton affinity]

[10m] Gas phase acidity is measured in this part of a spectrometer, which may be quadrupolar or dipolar (“DYE-polar”). In FT–MS, ions produce a free-induction decay while in this component by oscillating at the cyclotron frequency.

ANSWER: ion trap [or Penning trap]

[10h] Superbases can also be studied under this condition, where they may be ionized via electrospray or by directing them into a corona discharge with a carrier gas like helium. Spectrometers operating under this condition are prime candidates for miniaturization, as they lack bulky turbos or rotors.

ANSWER: high pressure [or atmospheric pressure; accept ambient pressure or ambient conditions] (ESI is done at atmospheric pressure.)

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Data

Team	Opponent	Part 1	Part 2	Part 3	Total
Berkeley A	Yale A	10	0	0	10
Chicago A	Cornell A	10	0	0	10
Chicago B	Waterloo	10	0	0	10
Chicago C	Vanderbilt	10	0	0	10
Claremont Colleges	Arizona State	10	0	0	10
Duke	Toronto B	10	10	0	20
Illinois	Georgia Tech	10	0	10	20
Iowa State	Johns Hopkins	0	0	0	0
Kentucky	Harvard	0	0	0	0
McGill	South Carolina	10	0	0	10
Michigan	NYU	10	0	0	10
Minnesota A	Stanford	10	10	0	20
Minnesota B	Chicago D	10	0	0	10
North Carolina B	Cornell B	10	0	0	10
Northwestern	Brown	10	0	0	10
Ottawa	Penn	0	0	0	0
Purdue	Indiana	10	0	10	20
Rutgers	Florida	10	0	0	10
Texas	Columbia A	10	10	0	20
Toronto A	Maryland	10	0	0	10
Truman State	Berkeley B	10	0	0	10
Virginia	Yale B	10	0	0	10
WUSTL A	North Carolina A	0	0	0	0
WUSTL B	Columbia B	10	10	10	30

Summary

Tournament	Edition	Exact Match?	Heard	PPB	Easy %	Medium %	Hard %
2024 ACF Nationals	04/21/2024	Y	24	11.25	83%	17%	13%