EXAMINATION DATA SHEET FOR THE PHYSICAL SCIENCES ...

NATIONAL SENIOR CERTIFICATE: PHYSICAL SCIENCES: PAPER II ? DATA SHEET

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EXAMINATION DATA SHEET FOR THE PHYSICAL SCIENCES (CHEMISTRY)

TABLE 1 PHYSICAL CONSTANTS

NAME Magnitude of charge on electron Mass of an electron Standard pressure Molar gas volume at STP Standard temperature Avogadro's constant Faraday's constant

SYMBOL e me p V m T NA F

VALUE 1,6 ? 10?19 C

9,1 ? 10?31 kg

1,01 ? 105 Pa 22,4 dm3mol?1

273 K

6,02 ?

mol?1

96 500 Cmol?1

TABLE 2 CHEMISTRY FORMULAE

n= m M

c = n OR c = m

V

MV

n= N NA

n= V Vm

= Kw [H3O+ ][OH - ] = 1 ? 10?14 at 298 K

Q = It

= Ecell

E - E cathode

anode

= E E - E

cell

oxidising agent

reducing agent

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NATIONAL SENIOR CERTIFICATE: PHYSICAL SCIENCES: PAPER II ? DATA SHEET

TABLE 3 PERIODIC TABLE

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

1 2,1

Atomic number (Z) 1

2,1 Electronegativity

2

1 H

1

H

He

4

3 1,0 4 1,5

2 Li Be

7

9

1 Relative atomic mass

5 2,0 6 2,5 7 3,0 8 3,5 9 4,0 10

B C N O F Ne

10,8 12

14

16

19

20

11 0,9 12 1,2

13 1,5 14 1,8 15 2,1 16 2,5 17 3,0 18

3 Na Mg

A Si P S C Ar

23

24,3

27

28

31

32

35,5 40

19 0,8 20 1,0 21 1,3 22 1,5 23 1,6 24 1,6 25 1,5 26 1,8 27 1,8 28 1,8 29 1,9 30 1,6 31 1,6 32 1,8 33 2,0 34 2,4 35 2,8 36

4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr

39

40

45

48

51

52

55

56

59

59

63,5 65,4 70

72,6 75

79

80

84

37 0,8 38 1,0 39 1,2 40 1,4 41 1,6 42 1,8 43 1,9 44 2,2 45 2,2 46 2,2 47 1,9 48 1,7 49 1,7 50 1,8 51 1,9 52 2,1 53 2,5 54

5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe

85,5 88

89

91

93

96

99

101 103 106 108 112 115 119 121 128 127 131

55

56

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

6 Cs Ba

Hf Ta W Re Os Ir Pt Au Hg T Pb Bi Po At Rn

133 137,3

178,5 181 184 186 190 192 195 197 200,6 204,4 207 209 ?

?

?

87

88

7 Fr Ra

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu

89

90

91

92

93

94

95

96

97

98

99

100 101 102 103

Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lw

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Increasing oxidising ability Increasing reducing ability

NATIONAL SENIOR CERTIFICATE: PHYSICAL SCIENCES: PAPER II ? DATA SHEET

TABLE 4 STANDARD ELECTRODE POTENTIALS

Half ?reaction

Li+ + e?

Li

K+ + e?

K

Cs+ + e?

Cs

Ba2+ + 2e?

Ba

Sr2+ + 2e?

Sr

Ca2+ + 2e?

Ca

Na+ + e?

Na

Mg2+ + 2e?

Mg

A3+ + 3e?

A

Mn2+ + 2e?

Mn

2H2O + 2e?

H2(g) + 2OH?

Zn2+ + 2e?

Zn

Cr3+ + 3e?

Cr

Fe2+ + 2e?

Fe

Cd2+ + 2e?

Cd

Co2+ + 2e?

Co

Ni2+ + 2e?

Ni

Sn2+ + 2e?

Sn

Pb2+ + 2e?

Pb

Fe3+ + 3e?

Fe

2H+ + 2e?

H2(g)

S + 2H+ + 2e?

H2S(g)

Sn4+ + 2e?

Sn2+

SO42? + 4H+ + 2e?

SO2(g) + 2H2O

Cu2+ + 2e?

Cu

2H2O + O2 + 4e?

4OH?

SO2 + 4H+ + 4e?

S + 2H2O

I2 + 2e?

2I?

O2(g) + 2H+ + 2e?

H2O2

Fe3+ + e?

Fe2+

Hg2+ + 2e?

Hg

NO3? + 2H+ + e?

NO2(g) + H2O

Ag+ + e?

Ag

NO3? + 4H+ + 3e?

NO(g) + 2H2O

Br2 + 2e?

2Br?

Pt2+ + 2e?

Pt

MnO2 + 4H+ + 2e?

Mn2+ + 2H2O

O2 + 4H+ + 4e?

2H2O

Cr2O72? + 14H+ + 6e?

2Cr3+ + 7H2O

C2(g) + 2e?

2C?

Au3+ + 3e?

Au

MnO4? + 8H+ + 5e?

Mn2+ + 4H2O

H2O2 + 2H+ + 2e?

2H2O

F2(g) + 2e?

2F?

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Page iii of iii

E?/volt ?3,05 ?2,93 ?2,92 ?2,90 ?2,89 ?2,87 ?2,71 ?2,37 ?1,66 ?1,18 ?0,83 ?0,76 ?0,74 ?0,44 ?0,40 ?0,28 ?0,25 ?0,14 ?0,13 ?0,04 0,00 +0,14 +0,15 +0,17 +0,34 +0,40 +0,45 +0,54 +0,68 +0,77 +0,79 +0,80 +0,80 +0,96 +1,09 +1,20 +1,21 +1,23 +1,33 +1,36 +1,42 +1,51 +1,77 +2,87

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