Chem1102 Summer School Sample Tutorial Quiz 1

Transcription

1 hem1102 Summer School Sample Tutorial Quiz 1 1. What is the molecular formula of the following compound? a) 9 18 b) 9 19 c) d) e) Which of the following functional groups is incorrectly labelled? D E N a) ketone b) amide c) ester d) alcohol e) ether 3. What is the correct stick representation of (Z)-2-methyl-3-hexene? D E 4. dentify the nucleophile, electrophile and the major product in the following reaction? r r r () () () nucleophile electrophile major product a) () () b) () () c) () () d) () () e) () () and () equal 5. Which of the following compounds will absorb strongly near 3500 cm 1 in the infrared spectrum? a) X only b) W and Z c) V and Y d) all of them e) none of them V W X Y Z

2 6. n the 1 NMR spectrum of 2-methoxypropane, what would be the splitting patterns for groups,, respectively? a) triplet quartet doublet 3 b) doublet singlet triplet c) singlet septet doublet 3 3 d) triplet singlet septet e) singlet quartet doublet 7. n the 1 NMR spectrum of 2-methoxypropane (structure shown in Q6), what are the relative intensities of the signals resulting from groups,, respectively? a) 1:2:3 b) 3:1:3 c) 3:1:6 d) 3:3:2 e) annot be determined 8. What is the hybridisation of the atoms marked and in the following structure? N a) : sp : sp 2 b) : sp 2 : sp c) : sp 2 : sp 3 d) : sp 3 : sp 2 e) : sp 3 : sp 3 9. What is the major product from the addition of to 1-butene. a) b) c) d) e) 10. What reagent(s) will effect the following change? a) + / 2 b) 1. Sl c) hot conc. + d) r / + e) 1. Lil / 2 2 orrect answers: 1E, 2, 3D, 4, 5, 6, 7, 8, 9E, 10D

3 hem1102 Summer School Sample Tutorial Quiz 2 1. What is the order of priority (1 st = highest) and the absolute configuration of the following compound? 1 st 2 nd 3 rd 4 th bs. onfig. a) 3 (S) 3 b) 3 (R) c) 3 (S) d) 3 (R) e) 3 (R) 2. Which definition best describes the following pair of compounds? a) Enantiomers b) Diastereomers l c) onstitutional isomers d) onformers 3 r r e) Same compound 3 l 3. Which one of the following reagents would best effect the conversion shown? a) / 2 /heat e) 3 N 2 b) ( 3 ) 3 N c) ( 3 ) 2 N 3 d) N 3 N Which term best describes the stereochemistry of the product of the following reaction? a) achiral b) (R)-enantiomer 3 1) NaN 2 c) (S)-enantiomer d) racemic mixture 2) 3 e) impossible to tell

4 Questions 5 and 6 refer to the following molecules. N 2 3 D E 5. Which compound will dissolve in dilute l? a) b) c) d) D e) E 6. Which compound will react with Na 3 solution to give 2 (g) and an anion? a) b) c) d) D e) E 7. Which one of the following reagents would best effect the conversion shown? a) 2 / Pd catalyst b) Na 4 followed by + / 2 c) r / + d) hot conc. 2 S 4 e) hot dilute 8. Which one of the following reagents would best effect the conversion shown? a) N b) NaN c) r / + d) / 2 /heat e) hot conc. 2 S 4 r N 9. What are the products of the base catalysed hydrolysis of 3 2 3? a) b) c) d) e) What are the reagents and reaction conditions required to carry out the transformations below? r (i) (ii) (iii) (a) (i) hot conc. (ii) hot conc. 2 S 4 (iii) hot conc. 2 S 4 (b) (i) hot dilute / 2 (ii) hot conc. 2 S 4 (iii) hot conc. 2 S 4 (c) (i) hot conc. 2 S 4 (ii) hot dilute 2 S 4 (iii) K 2 r 2 7 / + / 2 (d) (i) hot dilute / 2 (ii) K 2 r 2 7 / + / 2 (iii) Na 4 followed by dilute acid (e) (i) hot conc. (ii) hot dilute 2 S 4 (iii) K 2 r 2 7 / + / 2 orrect answers: 1, 2E, 3E, 4, 5, 6D, 7, 8, 9E, 10E

5 hem1102 Summer School Sample Tutorial Quiz 3 1. n each of the following titrations, the first solution is in the burette and the second solution is in the titration flask. For which titration would the curve illustrated be typical? 14 p Volume added a) Na 2 3 (0.05 M) / l (0.1 M) b) Na (0.1 M) / (0.1 M) c) Na (0.1 M) / 3 (0.1 M) d) N 3 (0.1 M) / 3 (0.1 M) e) N 3 (0.1 M) / l (0.1 M) ml of a M solution of Na is diluted to 400 ml with water. What is the p of the resulting solution? a) b) c) 3.03 d) e) none of these 3. buffered solution is M 3 2 and M Na 3 2. f mol of solid Na is added to 1.00 L of the buffered solution, what is the final p of the solution? For acetic acid, pk a = (int: Use the enderson-asselbalch Equation) a) b) 4.98 c) 4.50 d) 5.70 e) What is the p of a 0.01 M solution of acetic acid (K a = 1.8 x 10-5 M)? a) 2.0 b) 3.4 c) 4.2 d) 5.0 e) Which one of the following is not an example of a conjugate acid-base pair? a) S - 2-4, S 4 - b) N 2, N 2 c) 6 5, d) r, r - e) N + - 4, N 2

6 6. onsider the following heating curve for substance Y. Which phases of Y are present in section? a) solid only b) liquid only c) gas only d) solid and liquid e) liquid and gas Temperature D E F Time 7. Given that K sp for d() 2 is M 3 at 25 o, what is the solubility of d() 2 in mol L 1? a) b) c) d) e) solution of 100 ml of M d(n 3 ) 2 is added to 100 ml of a solution of M K. Which statement is correct? a) The ionic product is M 3 and d() 2 (s) does not precipitate. b) The ionic product is M 3 and d() 2 (s) precipitates. c) The ionic product is M 3 and d() 2 (s) precipitates. d) The ionic product is M 3 and d() 2 (s) does not precipitate. e) none of the above 9. What is the expression for the solubility product, K sp, of magnesium carbonate, Mg 3? a) K sp = [Mg 2+ ][ 3 2- ] / [Mg 3 ] b) K sp = [Mg 2+ ][ 3 2- ] c) K sp = [Mg 2+ ] 2 [ 3 2- ] 2 d) K sp = [Mg 3 ] / [Mg 2+ ][ 3 2- ] e) K sp = [Mg 2+ ] 2 [ 3 2- ] 2 / [Mg 3 ] 10. What is the systematic name for the coordination compound, [r l 2 ( 2 ) 4 ]l? a) dichlorotetraaquachromium() chloride b) tetraaquadichloridochromium() chloride c) dichlorotetrahydrochromium() chloride d) tetraquadichloridochromium() chloride e) tetraquadichloridochromate() chloride orrect answers: 1, 2D, 3, 4, 5E, 6, 7, 8, 9, 10