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Details

3

‘Solutions’ box: ‘amount’ cannot be expressed as g

4

Q14a ‘anhydride’ not ‘acid’

9

Successive ionisation energies good evidence for shells, first ionisation energies of successive elements good evidence for orbitals.

24

s and p bonds (diagram) should interpenetrate

22

C₆₀ is not the only fullerene

31

Under DH_EA: Atoms ‘want’…

33-34

DH^o should be in kJ mol^-1 not just kJ? See Q4 in particular.

40

Q16B 2 H₂O₂ à surely?

43

Half-way down: Should be [acid] not [ester]

43

Quadratic equations are not required! (See Syllabus 17.2.1 and 18.1.5)

45

Ka of H2O is 1.82 x 10^-16 pKa=15.7 (= -log[H+][OH-]/[H2O])

52

typos in weak acid –strong base titration.  [CH3COO-] = 0.5 and substitution into equation of that and [CH3COOH] is also incorrect.

53

Q14 – no units given for Ka

55

Picky, but: An element can combine without changing oxidation state: nickel carbonyl formation, for example.

56

Oxidation potentials given but reduction potentials are conventional (see e.g. table 14 of IB Data Booklet)

Half-cells are not only made by putting a metal in contact with an aqueous solution of its own ions. What about the hydrogen electrode? Iron(ii)/iron (iii) couples?

62

166

Amine nomenclature: aminoethane (etc) used but ethylamine (etc) is used on p21 of the IB Data Booklet and p162 of Neuss itself

96

Not all fats & oils are triglycerides. Cholesterol and phospholipids for example.

Fats are also used as hormones, electrical insulation in nerves.

156

Redundant 2 in 2-methyl-but-2-ene

162

‘Trimethylethanoic’? Dimethylpropanoic!

165

CHCl₃ given for CH₃Cl

166

Chlorobenzene is less reactive than benzene, not more reactive as stated.

169

Use ‘EE’ function rather than x10^ keys…

176

Under acids and bases #5 is A