hydrogenation - Northeast

Round 7: Tossup 6

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

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> | Packet J

= Average correct buzz position

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Buzzes

Player	Team	Opponent	Position	Value
Surya Dinesh	MIT A	Brown B	47	10
Andrew Park	Harvard	Brandeis Beethoven	57	10
Ayaan Jajodia	Dartmouth B	Williams B	66	10
Yvonne Pan	Amherst B	Boston University B	70	10
Ben Mowery	Vermont A	Tufts B	71	-5
Emma Gates	Brown A	Dartmouth A	76	-5
Akif Ismail	Williams C	Dartmouth C	79	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

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
South Central	US	6	83%	33%	98.20
Southeast	US	13	85%	31%	93.09
Upstate NY	US	6	83%	50%	100.00