Section 1.1 Section 1.2 Section 1.3 - The Student Room

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SECTION 3 6 a H XX X X N XX H – About 109° b H X XX N X H + About 120° Section 3.4 1 a C 6 H 14 , C 6 H 12 , not isomers b C 4 H 9 Cl, C 4 H 9 Cl, isomers c C 3 H 8 O, C 3 H 6 O, not isomers d C 7 H 8 O, C 7 H 8 O, isomers e C 3 H 9 N, C 3 H 9 N, isomers 2 Isomers of C 5 H 12 : C C C C C C pentane 4 Isomers of C 8 H 10 (containing a benzene ring): CH 3 CH 3 CH 3 CH 3 CH 3 CH 2 CH 3 CH 3 C C C C 2-methylbutane 5 OH C C C C OH C C C C C C C C 2,2-dimethylpropane C 3 There are 4 isomers of C 4 H 9 Br: C C C C Br C C C C Br C C C C OH C O C C C C C C OH C C C C C Br C C C C Br C C O C C C C O C C 167
SECTION 3 Section 3.5 1 F F 4 a F 2 H F H H 3 C H H 3 C H C C C C C C C C H H F H CH 2 CH 3 CH 2 CH 3 H cis-1,2-difluoroethene trans-1,2-difluoroethene trans-pent-2-ene cis-pent-2-ene F C C H H b No c There must be the same two atoms or groups of atoms on each C atom attached to the double bond. Geometric isomers are not possible if two groups on one side of the double bond are the same. 5 a Cis–trans isomers b 2 moles of H 2 c Citronellol is a partially hydrogenated form of nerol (or geraniol). d Structural isomers of the cis- and trans-isomers. 6 3 a Cl H C C Cl H cis-1,2-dichloroethene cis-poly(ethyne) n Cl H C C H Cl trans-1,2-dichloroethene trans-poly(ethyne) n b Cis-1,2-dichloroethene c The cis-isomer has a dipole moment whereas the trans-isomer does not. The permanent dipole–permanent dipole intermolecular forces in the cis-isomer make it more difficult to separate the molecules. 7 a H H X X C X H X N X X b H 3 C CH 3 N N XX N X H X C X H X H H 3 C N N cis form CH 3 trans form Section 3.6 1 a A chiral centre. b iii 2 a Br b 3 a b c CH 3 H 3 C H CH CH 2 CH 3 CH 3 CH CH 2 C * 3 CH 2 CH 2 CH 3 H Br C H 3 C H 3 CH 2 CH 2 C C CH 2 CH 3 H CH 2 CH 3 CH 3 CH 2 Br C H H 3 CH 2 C 4 a b CH 2 OH NH 2 COOH C * CH 2 CH 2 CH 3 H c d H H C C CH 3 HOOC NH 2 H 2 N COOH CH 2 OH HOH 2 C D-isomer L-isomer (Use the CORN rule to name the isomers.) 5 L-Cysteine is readily available as a hydrolysis product of CH 3 proteins. D-Cysteine has to be made synthetically. It is probably C made together with L-cysteine from which it must be H separated. 168
Page 1 and 2: SECTION 1 Section 1.1 1 a 2.0 b 5.3
Page 3 and 4: SECTION 2 Section 2.2 1 a 238 234 9
Page 5: SECTION 3 Section 3.2 1 a Li(g) bec
Page 9 and 10: SECTION 4 CH 3 CHO(l) +2 O 2 (g)
Page 11 and 12: SECTION 4 Section 4.6 1 a i Li(s) +
Page 13 and 14: SECTION 5 Section 5.1 1 a Ca 2+ (aq
Page 15 and 16: SECTION 5 5 a H H H c H b H O H C H
Page 17 and 18: SECTION 6 5 a In ionic substances,
Page 19 and 20: SECTION 6 7 Accurate atomic masses
Page 21 and 22: SECTION 7 Section 7.2 1 a 0.09 5 a
Page 23 and 24: SECTION 8 Section 7.7 1 a i AgI(s)
Page 25 and 26: SECTION 9 2 a Buffer solutions are
Page 27 and 28: SECTION 10 Section 10.1 1 a b c A r
Page 29 and 30: SECTION 11 Section 11.2 1 Element T
Page 31 and 32: SECTION 12 Section 11.6 1 a 2 b 4 c
Page 33 and 34: SECTION 12 5 a H H H Br Br + 2Br 2
Page 35 and 36: SECTION 13 6 a H H H H H C C I + OH
Page 37 and 38: SECTION 13 Section 13.4 1 a A butan
Page 39 and 40: SECTION 13 6 a O O CH 3 CH 2 OH + C
Page 41 and 42: SECTION 13 6 a H H OH b H H OH H H
Page 43 and 44: SECTION 14 Section 13.10 1 a + - NH
Page 45 and 46: SECTION 14 5 a i Reagents and condi
Page 47: SECTION 15 Section 15.5 1 a Many of

Section 1.1 Section 1.2 Section 1.3 - The Student Room

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