hydrogenation - 2025 ACF Fall

Tossup

Elaidic (“EL-ay-id-ick”) acid undergoes this reaction to form stearic acid. A catalyst commonly used for this reaction consists of three (10[1])triphenylphosphine (10[1])(“tri-FEN-ill-FOSS-fene”) groups (10[1])bonded to a rhodium atom and is named for (10[1])Wilkinson. (10[2]-5[1])This reaction (10[1]-5[1])is (10[1])performed (10[1])in a “syn-” (“sin”) fashion (10[1])on a palladium (10[2])or platinum (10[1]-5[3])catalyst. (10[7]-5[3])Due to isomerization, (10[2])this (-5[1])reaction (-5[1])may introduce (-5[1])trans byproducts (10[2])while making products (-5[2])less (10[1])prone to (-5[1])auto-oxidation (-5[1])and more solid (10[1])at room temperature. (10[4]-5[1])This (10[1])type of addition (10[1]-5[2])reaction (-5[1])is used (10[1])to produce margarine (10[1]-5[2])by reducing (10[1])alkenes (10[6])to saturated (10[4]-5[2])alkanes. (10[4]-5[2])For 10 points, (10[2])name this (10[1])reaction in which (10[1])a molecule (-5[1])gains (10[1])two atoms (-5[4])of the lightest (-5[1])element. (10[1])■END■ (10[55]0[27])

ANSWER: hydrogenation [accept hydrogenization; accept word forms like hydrogenate; accept fat hydrogenation or hydrogenated oils or hydrogenated fats; accept partial hydrogenation; accept hydrogen addition; prompt on addition until read; prompt on reduction or redox reactions or word forms like reducing until “reducing” is read; reject “dehydrogenation”] (The third line refers to trans fats.)

<Editors, Chemistry>

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Buzzes

Player	Team	Opponent	Position	Value
Jesse Mindel	NCSU A	William & Mary A	18	10
Pace Klein	CWRU B	CWRU A	19	10
Christian Humeniuk	McMaster A	Toronto D	20	10
Ilyas Choukri	Virginia Tech A	UNC A	29	10
Ethen Sun	Toronto C	Toronto B	30	10
Gannon Smith	Maryland A	Rutgers A	30	10
Sophia Madrazo	Purdue B	Illinois Canada	30	-5
Aaryan Sumesh	Berkeley Archer Queen	Berkeley Mighty Miner	32	10
Martin Brandenburg	Georgia A	Emory A	32	-5
Nick Machin	UCLA A	USC B	33	10
Joseph Strom	Louisville B	Ohio State A	34	10
Sarah Dong	Michigan A	Michigan B	38	10
Jackson Crickard	Claremont B	UCLA B	41	10
Rohit Chintala	Maryland B	George Mason A	41	10
Advai Srinivasan	UC Irvine	Claremont C	43	-5
Alden Thompson	Carleton A	McGill E	43	-5
Aiden Shields	Clemson A	Chipola College	43	-5
Amelia Rees	Durham A	Edinburgh C	43	10
Hansen Jin	Berkeley Skeleton King	Berkeley Little Prince	44	10
Aarav Kakad	UCLA C	UC Santa Barbara	44	10
Annika Larson	Claremont A	UCLA D	44	10
Malcolm Meyn	McGill C	McGill A	44	10
Arjun Saulnier	CWRU C	Michigan D	44	-5
Jason Thieu	Michigan State A	Louisville A	44	10
Asish Madarapu	UNC D	Virginia Tech C	44	-5
Eric Morshed	Johns Hopkins	George Mason B	44	10
George Matsumura	Washington Chum	Alberta B	44	10
Daniel Lu	Washington Pink	Washington Masu	44	-5
Jeremy Kim	Toronto F	McMaster C	47	10
Surya Dinesh	MIT A	Brown B	47	10
Brendan Liaw	British Columbia A	Washington Coho	48	-5
Michael Xu	McMaster B	Waterloo C	49	-5
Tishe Sonuga	Chicago B	Purdue A	51	-5
Alex Wong	Rutgers D	Penn	53	10
Grace Early	Iowa A	Purdue C	53	10
Alex Matchinski	Michigan Tech	Wisconsin C	56	-5
Juliette Flatau	Imperial A	Cambridge D	56	-5
Andrew Park	Harvard	Brandeis Beethoven	57	10
Kevin Hendargo	UCSD A	UCSD B	59	-5
Moses Dong	Georgia Tech F	Georgia Tech E	60	-5
Caleb Slusher	South Carolina A	Tennessee A	63	10
Galen Mueller	McGill B	Ottawa D	66	10
Francis Dinh	Illinois Canada	Purdue B	66	10
Ayaan Jajodia	Dartmouth B	Williams B	66	10
Suyog Vibhuti	Washington Steelhead	Washington Chinook	66	-5
Kushagra Bahuguna	Washington Chinook	Washington Steelhead	66	10
Dawson Teu	Waterloo A	Toronto A	67	10
Yvonne Pan	Amherst B	Boston University B	70	10
Jonah McGinley	Rochester	Binghamton C	70	-5
Jonah McGinley	Rochester	Binghamton C	70	-5
Ben Mowery	Vermont A	Tufts B	71	-5
Charlotte Nicholas	Durham B	Edinburgh B	73	10
Ritisha Dey	Stanford A	UCSC	76	10
Alex Smits	Wisconsin A	Iowa State	76	-5
Emma Gates	Brown A	Dartmouth A	76	-5
Zach Majorowicz	St. Thomas	Macalester	78	10
Nina Chen	Waterloo B	Toronto G	79	10
Renita Tang	NYU C	Rutgers C	79	10
Akif Ismail	Williams C	Dartmouth C	79	10
Liam Markland	Alberta A	Washington Atlantic	79	10
Brayden Zhang	Vanderbilt B	Mississippi State A	79	10
Laura Bullock	Sheffield A	Edinburgh A	79	10
Simon Choist	Queen's A	Brock A	81	-5
Juan Landaeta	Florida State A	ERAU Daytona A	81	10
Alexandra Knight	Liberty B	NCSU B	81	10
Emily Kadolph	Virginia Tech B	Virginia A	81	-5
Elizabeth Ziberman	Stony Brook	Vassar A	81	10
Michael Shipman	Cambridge D	Imperial A	81	10
Chris Chang	USC A	UCLA E	82	10
Jayden Ngo	Kentucky	Pittsburgh	82	10
Kelvin Ni	NYU A	Maryland C	82	10
Alex Dzurick	William Woods University A	Illinois Blue	82	-5
Niyanthi Yamunan	Georgia Tech E	Georgia Tech F	82	10
Advaith Jagannath	Cambridge C	Cambridge E	82	-5
Yoyo Liu	British Columbia C	Washington State	85	10
James Carrick-Lawson	Southampton	Cambridge A	85	10
Danny Han	Stanford B	Berkeley Boss Bandit	87	10
Nathan Woolery	Louisville C	Michigan State D	90	10
Steven McPhillimey	Lehigh A	Rutgers B	92	-5
Atom Lucenet	Imperial D	Oxford	93	10
Sean Gao	Toronto E	Guelph A	95	-5
Carly Hemani	JMU A	William & Mary B	95	-5
Arhith Dharaendra	Georgia Tech B	Auburn B	95	-5
Peter Smith	Binghamton A	RIT B	95	-5
Miles Phillips	Florida Tech B	South Florida A	98	-5
Matthew Westley	Purdue A	Chicago B	99	10
Sarah Silverman	Claremont C	UC Irvine	100	10
Ethan Ririe	UCSD B	UCSD A	100	0
Valentina Chamandy	McGill E	Carleton A	100	10
Abhay Ariyapappillil	Ottawa B	Ottawa A	100	10
Gus Morin-Strom	Carleton B	Ottawa C	100	0
Sam Montgomery	Ottawa C	Carleton B	100	10
Mikkie Smylie	Brock A	Queen's A	100	0
Ibraheem Alkrahgholy	Guelph A	Toronto E	100	0
Saju Ramraj	Toronto I	Toronto H	100	0
Thomas Vukovic	Toronto H	Toronto I	100	0
Lucas Hall	Waterloo C	McMaster B	100	10
Nicholas Nguyen	Florida B	Florida Tech A	100	10
Addison Wiggins	South Florida A	Florida Tech B	100	0
Peyton Legg	UCF A	Florida A	100	10
Reed Sexton	Michigan C	CWRU D	100	10
Gary Wang	Michigan D	CWRU C	100	10
Joshua Lam	Ohio State B	Michigan State B	100	10
Bonham Buchannon	Louisville D	Ohio State C	100	10
Ryan Liu	Ohio State D	Michigan State C	100	10
Marcus Hatfield	WVU B	WVU A	100	0
Chase Moss	WVU A	WVU B	100	0
AnnaLee Simpson	Tusculum A	Liberty C	100	0
Gabriel Dodds	Liberty C	Tusculum A	100	10
Alma Gazzaniga	UNC B	UNC C	100	10
Liam Rojas	Virginia A	Virginia Tech B	100	10
Sophia Jagels	William & Mary B	JMU A	100	10
Nathan Redford	Liberty A	William & Mary C	100	0
Charles Miller	William & Mary C	Liberty A	100	10
Daniel Abrams	Rutgers B	Lehigh A	100	0
Jun Chen	George Mason C	Columbia B	100	10
Rishi Swaminathan	NYU B	Lehigh B	100	10
Andrew Wu	Columbia A	Princeton	100	10
Andrew Sklar	Vassar B	Rowan	100	0
Sam Millenbach	Rowan	Vassar B	100	10
Saswat Sasha Tripathi	Chicago A	WashU Grizzlers	100	10
David Black	Illinois Champaign	Iowa B	100	0
Emily Justak	Indiana B	Illinois Orange	100	0
Sam Alahi	Illinois Orange	Indiana B	100	10
James Windle	Purdue D	Rose-Hulman A	100	10
Camden Walker	WashU Grolars	Indiana A	100	0
Trenton Burgess	Indiana A	WashU Grolars	100	10
Jiping Fang	Illinois Blue	William Woods University A	100	10
Will Demos	Wisconsin B	Minnesota	100	0
Drew Wetterlind	Iowa State	Wisconsin A	100	10
Dashiell Helmer	Wisconsin C	Michigan Tech	100	10
Jack Granahan	Brandeis Mozart	Boston College A	100	0
Beverly Eborn	Boston College A	Brandeis Mozart	100	10
Elliott Gomes	Dartmouth A	Brown A	100	0
Madeline Strauss	Tufts A	Amherst A	100	10
Reid Eichberg	Tufts B	Vermont A	100	10
Duncan Occhiogrosso	UConn A	Boston University A	100	10
Matthew Kohn	Williams A	Vermont B	100	10
Alex Hestermann	Washington Sockeye	Arizona State A	100	10
Olivia Ding	Texas	British Columbia B	100	10
Grace Lovitt	Washington Masu	Washington Pink	100	10
Darren Kellis	Vanderbilt A	Alabama A	100	10
Daniel Slater	Tennessee Tech	Auburn A	100	10
Justin Gilbert	Auburn C	Vanderbilt C	100	0
Edward Zhang	Vanderbilt C	Auburn C	100	0
Jeremy Scurlock	Chipola College	Clemson A	100	10
John Shelley	Clemson B	Montevallo	100	10
Andy Truette	Clemson C	Sewanne	100	0
Isabel Dent	Sewanne	Clemson C	100	0
Barkot Belay	Emory A	Georgia A	100	10
TJ Pickering	Auburn B	Georgia Tech B	100	10
Allen Xu	Georgia Tech A	Georgia Tech C	100	0
Emerson Patmore	Georgia Tech C	Georgia Tech A	100	10
Daniel Huang	Georgia Tech D	Tennessee B	100	10
Rob Morris	Durham D	Edinburgh D	100	10
Stephen Donoghue	Sheffield B	Durham C	100	10
Ahmed Azhari	Cambridge E	Cambridge C	100	10
James Stadler	Imperial B	Birmingham	100	10
Eve Gatley	Bristol	Imperial C	100	10
Jolie Yeh	Warwick	LSE	100	0
Shlok Dev	LSE	Warwick	100	10
Eli O'Sick Johnson	Binghamton C	Rochester	100	10
Eli O'Sick Johnson	Binghamton C	Rochester	100	10
Derek Li	Cornell A	Cornell D	100	10
Connor Yu	Cornell C	Binghamton B	100	0
Isaiah Schmid	Binghamton B	Cornell C	100	10
Jack Glenn	ESF	RIT A	100	10
Hayley Morris	RIT B	Binghamton A	100	0

Summary

Tournament	Edition	TUH	Conv. %	Neg %	Average Buzz
UK (North)	UK	5	100%	0%	79.00
UK (South)	UK	7	100%	29%	94.14
Northern California	US	4	100%	0%	59.75
Southern California	US	7	86%	29%	57.33
Eastern Canada (1)	US	5	100%	20%	82.00
Eastern Canada (2)	US	9	67%	33%	57.17
Florida	US	4	75%	25%	93.67
Great Lakes	US	12	92%	8%	73.36
Lower Mid-Atlantic	US	9	89%	33%	78.50
Upper Mid-Atlantic	US	10	100%	0%	76.90
Upper Mid-Atlantic	US	2	50%	50%	41.00
Midwest	US	9	89%	33%	89.75
North	US	4	75%	50%	92.67
Northeast	US	11	91%	18%	81.90
Pacific	US	8	88%	38%	82.00
Southeast	US	13	85%	31%	93.09
Upstate NY	US	6	83%	50%	100.00