Chemistry 13 0 Final Exam. June 11,2008. Dr. Richard Nafshun

Transcription

1 Chemistry 13 0 Final Exam Spring 2008 June 11,2008 Oregon State University Dr. Richard Nafshun Fill in the front page of the Scantron answer sheet with your last name, first name, middle initial, and student identification number. Leave the class section number and the test form number blank. This exam consists of 22 multiple-choice questions. Each multiple-choice question has five points associated with it. Select the best multiple-choice answer by filling in the corresponding circle on the rear page of the answer sheet. benzene aniline chlorobenzene phenol benzoic acid benzonitrile toluene styrene nitro benzene benzaldeh yde bromobenzene benzenesulfonic acid

2 Amino aclds with hydrophobic side pups COO COO COO COO COO +%N-C-H + &,N-C-H +&N-C-H +&N-C-H CH3 CH3 V ali ne Le wine solewine Methionire Phenylalanine V (leu) (ile) pw F Amino acids with hydrophilc side groups coo- COO' coo- COO COO +&N-C-H COO Aspa@ l-4 R COO' +%N-C-H COO Aspartic acid (up) D Glutamic acid Glutamine Histidine Lysine W Q m.1 H 0s) K H Amino acids that are in betwe en COO- COG COO COD COO' COO' p-w]f~ +%N-C-H +&N-J -H +&N-C-H +bn-l-h +bn-a-h CH3 Glycine Alanine S erine Thre onine (91~) G Wla) A (ser) s (thr) T COG COO

3 Alcohols R-OH Am i nes R-NH2 Aldehydes R-C-H Ketones O R-C- Rr Ethers R-0-R' O Carboxylic Acids R-C-OH Thioalcohols R- SH Disulf ides R - S- S- R' Esters 0 R-C-0-R' Am i des R-C-N-R' Al k enes CH2 = CH2 Al kynes HC i CH 1. What is the name of the following structure?

4 2. The molecular formula of Vitamin C (shown below) is: (c) is C7H806 is C7H606 is c7ho6 3. Which of the following is NOT an isomer of 2-methyl-3-ethylheptane? c d 5-methylnonane./ 2-methy13-ethylheptane fl & c a 2, pentameth 1 entane J eilzp=q C lh. (E) decane -?- -,-- :,-r"@" c. - - c - e. - c -, c.. - G.

5 '9, hbr 4. Complete the following substitution reaction: %of b K y B r 2 L.\ j + HBr - / ! i Br E \ 1-5. Complete the following elimination reaction: OH warm

6 0 0 \ H-C-H rc- C-0-tt (Dl (E) CH3CH3 CH30H an acetal a hemiacetal 7. Which of the following is true? (D) CH3CH2CH3 has a higher boiling point than CH3CH20CH3 because of hydrogen bonding. CH3CH2CH3 has a higher boiling point than CH3CH2CH20H because of dipole-dipole forces. CH3CH20CH3 has a higher boiling point than CH3CH2CH20H because of dipole-dipole forces. CH3CH20CH3 has a higher boiling point than CH3CH2CH20H because of hydrogen =.'. : *... '* s.w&...< - " /.-.r- "^ -..-*-._. CH3CH2CH20H has a higher boiling point than CH3CH20CH3 because of hydrogen bonding. e+r 1 a*\; nc 8. n a condensation reaction, an -and a carboxylic acid produce: an ester B a 1? (D) an aldehyde (E) a ketone Q-c-Ql-4 4- H-~u-R +

7 (a) (e) none of the above 10. The ph of a sample of seawater is measured to be This sample is: acidic <s,$g;p-y '"CJ

8 1 1. The molecule below is commonly called 1,4-xylene. t is also known as: (D) (E) 1,4-dimethyltoluene 1,3-dimethyltoluene 12. Complete the following addition reaction:

9 Which of the following functional groups is not present in Arnoxicillin? it; + (D) (E) car oxy ic acid/ amidee alcohol J 14. The oxidation number of carbon in C02 is: 15. A P-sheet is an example of AfdJ (D) (E) quaternary structure an aldohexose

10 16. dentify the number of chiral carbons and whether sorbose (shown below) is L- or D-. k HQ- C chiral carbons and L- (D) 4 chiral carbons and D- (E) 5 chiral carbons and D- 17. Consider the reaction CO" (aq) + CU' (aq) - electrons is: co2+ (aq) + cu2+ (aq). The species gaining 18. The reaction of an aldehyde with A ~ (aq) + (in Tollens' Reagent): (D) (E) will produce a salt will produce an amino acid actually, an aldehyde will not react

11 19. Consider the fat molecule below. Which of the following is false? H 0 H-C H-C (D) (E) it contains trans bonds/ could undergo hydrogenation The missing portion o 0 0--P-0-P-0-P a phosphate group DNA

12 21. n DVA, the base pairs are G and C; A and T. t can be said that this selective pairing is due to: the aldohexose. omega-3 fats. enzyme liquidizing. 22. Which of the following is false? mrna carries information transcribed from DNA trna deliver amino acids one-by-one to protein chains--each carries only one amino acid Vitamins are molecules required in small quantities in the diet because our bodies cannot synthesize them (D) Vitamins A, D 2~-~.!-~~e%- E and K are fat soluble -'r -nl-ru.baw*dulp.--"xi- N (E) d A strand of DNA is between 3.1 and 3.3 mm in \-.-<=.-,.,.".:. *w".-"14"14"14.,"14,"14,"14>,"14"14,"14,"14"14 a,7l* 6.- -d-*-**-*e*c Aa 3 i r \ aa '4 o-~ndr (,? M)