Question
The Strecker synthesis produces these molecules which occur biologically with twenty different ‘R’ groups. For 10 points each:
[10e] Name these molecules that consist of a carbon atom bonded to an NH2 group, a COOH (“C-O-O-H”) group, and a residual group, which form the basis of proteins.
ANSWER: amino acids [do not accept or prompt on “amines” or “acids”]
[10m] Amino acids generally have a higher melting and boiling point that is a result of them existing in this molecular form, when a proton moves from the carboxyl group to the amine group, resulting in a new type of intermolecular bonding.
ANSWER: zwitterions [or dipolar ions; or inner salt]
[10h] Another compound that crystallises in a zwitterionic form is this one, which consists of an NH3+ (“N-H-three plus”) group bonded to an SO3- (“S-O-three minus”) group. Its neutral form resembles the product of the contact process, but with an O-H group replaced by an NH2.
ANSWER: sulfamic acid [accept amidosulfonic acid, amidosulfuric acid, aminosulfonic acid, or sulfamidic acid; prompt on sulfamate; do not accept or prompt “sulfuric acid” or “sulfonic acid”]
Summary
| 2023 UMN COOT | 08/19/2023 | Y | 3 | 13.33 | 100% | 33% | 0% |
Data
| Our Job is Buzz | BHSU | 10 | 0 | 0 | 10 |
| Jeff Weiner Fan Club | doubleplusnegfive | 10 | 10 | 0 | 20 |
| Weird Klaus Barbie | Palestrina Sawayama | 10 | 0 | 0 | 10 |