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Level 3 Chemistry...

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3

L3–CHEMR 993103

Level 3 Chemistry

RESOURCE BOOKLET Refer to this booklet to answer the questions in your Question and Answer Booklets. Check that this booklet has pages 2 – 3 in the correct order and that none of these pages is blank. YOU MAY KEEP THIS BOOKLET AT THE END OF THE EXAMINATION.

© New Zealand Qualifications Authority, 2020. All rights reserved. No part of this publication may be reproduced by any means without the prior permission of the New Zealand Qualifications Authority.

2

Formulae for 91390: Demonstrate understanding of thermochemical principles and the properties of particles and substances n = cV n=

m M Δr H ° =

q = mcΔT

−q n

Δ r H ° = Σ Δ f H °(products) − Σ Δ f H °(reactants)

Formulae for 91392: Demonstrate understanding of equilibrium principles in aqueous systems ⎡⎣ H 3O+ ⎦⎤ = 10− pH

pH = −log ⎡⎣ H 3O + ⎦⎤ K w = ⎡⎣H 3O+ ⎤⎦ ⎡⎣ OH− ⎦⎤ = 1× 10 −14 at 25°C pK a = − log K a

K a = 10 − pKa

⎡H 3O+ ⎤⎦ ⎡⎣ A− ⎤⎦ Ka = ⎣ [ HA] K s = 4s 3

Ks = s 2 n = cV n=

m M

Complex ions for 91392: Demonstrate understanding of equilibrium principles in aqueous systems [Ag(CN)2]–

[Ag(NH3)2]+

[Al(OH)4]–

[Cu(NH3)4]2+

[Pb(OH)4]2–

[Zn(OH)4]2–

[Zn(NH3)4]2+

[Ni(NH3)6]2+

[Ni(CN)4]2–

PERIODIC TABLE OF THE ELEMENTS 18 2

1

Atomic number

He

H 1 3

2

1.0

13

Relative atomic mass

4

5

Li

Be

6.9

9.0

Na 23.0 19

K 39.1 37

Ca

5

22

Ti

40.1 45.0 38 39

47.9 40

Sr

Y

24

V 50.9 41

54.9 43

Mo 95.9 74

Ba

Lu

Hf

Ta

175 103

179 104

181 105

Fr

Ra

Lr

Rf

223

226

262

261

Actinide Series

52.0 42

Nb

58

9

26

Mn

92.9 73

137 88

57

25

Zr

Cs

8

Cr

91.2 72

133 87

Lanthanide Series

7

10

27

Fe

28

29

Si

27.0 31

30

P

28.1 32

S

31.0 33

Ni

Cu

Zn

Ga

Ge

As

55.9 44

58.9 45

58.7 46

63.6 47

65.4 48

69.7 49

72.6 50

74.9 51

Tc

16.0 16 32.1 34

Se 79.0 52

Ru

Rh

Pd

Ag

Cd

In

Sn

Sb

Te

98.9 75

101 76

103 77

106 78

108 79

112 80

115 81

119 82

122 83

128 84

W

Re

Os

186 107

190 108

192 109

Db

Sg

Bh

Hs

262

263

264

265

60

12

O

Co

184 106

59

11

9

N 14.0 15

61

62

Ir

17

F 19.0 17

4.0 10

Ne 20.2 18

Cl

Ar

35.5 35

40.0 36

Br

Kr

79.9 53

83.8 54

I

Xe

127 85

131 86

Pt

Au

Hg

Tl

Pb

Bi

Po

At

Rn

195 110

197 111

201 112

204 113

207 114

209 115

210 116

210 117

222 118

Mt

Ds

Rg

Cn

Nh

Fl

Mc

Lv

Ts

Og

268

271

272

277

63

64

65

66

67

68

69

70

La

Ce

Pr

Nd

Pm

Sm

Eu

Gd

Tb

Dy

Ho

Er

Tm

Yb

139 89

140 90

141 91

144 92

147 93

150 94

152 95

157 96

159 97

163 98

165 99

167 100

169 101

173 102

Ac

Th

Pa

U

Np

Pu

Am

Cm

Bk

Cf

Es

Fm

Md

No

227

232

231

238

237

239

241

244

249

251

252

257

258

259

3

87.6 88.9 56 71

6

23

Sc

Rb 85.5 55

4

8

C 12.0 14

Al

Mg

16

7

B

3 24.3 20 21

15

6

10.8 13

12

11

14

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