Physical Sciences Grade 12 IEB Paper 2 2018 Data Sheet

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: PHYSICAL SCIENCES: PAPER II – DATA SHEET Page i of iii EXAMINATION DATA SHEET FOR THE PHYSICAL SCIENCES (CHEMISTRY) TABLE 1 PHYSICAL CONSTANTS NAME SYMBOL VALUE Magnitude of charge on electron e 1,6 × 10–19 C Mass of an electron me 9,1 × 10–31 kg Standard pressure pθ 1,01 × 105 Pa Molar gas volume at STP Vm 22,4 dm3 ⋅ mol–1 Standard temperature Tθ 273 K Avogadro's constant NA 6,02 × 1023 mol–1 Faraday's constant F 96 500 C ⋅ mol–1 TABLE 2 CHEMISTRY FORMULAE m N V n= n= n= M NA Vm n m c= OR c = V MV Kw = [H3O + ] ⋅ [OH − ] = 1 × 10–14 at 298 K θ θ θ Ecell = Ecathode − Eanode Q = It θ θ θ =Ecell Eoxidising agent − Ereducing agent IEB Copyright © 2018 PLEASE TURN OVER

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: PHYSICAL SCIENCES: PAPER II – DATA SHEET Page ii of iii TABLE 3 PERIODIC TABLE 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 He 1 H 4 3 1,0 4 1,5 5 2,0 6 2,5 7 3,0 8 3,5 9 4,0 10 1 2 Li Be Relative atomic mass B C N O F Ne 7 9 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 Aℓ Si P S Cℓ 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 Tℓ 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 IEB Copyright © 2018

Downloaded from hlayiso.com NATIONAL SENIOR CERTIFICATE: PHYSICAL SCIENCES: PAPER II – DATA SHEET Page iii of iii TABLE 4 STANDARD ELECTRODE POTENTIALS Half-reaction E°/volt Li + e– + ⇌ Li –3,05 + – K +e ⇌ K –2,93 + – Cs + e ⇌ Cs –2,92 Ba2+ + 2e– ⇌ Ba –2,90 2+ – Sr + 2e ⇌ Sr –2,89 2+ – Ca + 2e ⇌ Ca –2,87 Na+ + e– ⇌ Na –2,71 2+ – Mg + 2e ⇌ Mg –2,37 Aℓ + 3e 3+ – ⇌ Aℓ –1,66 2+ – Mn + 2e ⇌ Mn –1,18 2H2O + 2e– ⇌ H2(g) + 2OH– –0,83 Zn2+ + 2e– ⇌ Zn –0,76 3+ – Cr + 3e ⇌ Cr –0,74 Increasing reducing ability 2+ – Fe + 2e ⇌ Fe –0,44 Cd2+ + 2e– ⇌ Cd –0,40 2+ – Co + 2e ⇌ Co –0,28 2+ – Ni + 2e ⇌ Ni –0,25 Increasing oxidising ability Sn2+ + 2e– ⇌ Sn –0,14 2+ – Pb + 2e ⇌ Pb –0,13 3+ – Fe + 3e ⇌ Fe –0,04 + – 2H + 2e ⇌ H2(g) 0,00 S + 2H+ + 2e– ⇌ H2S(g) +0,14 4+ – Sn + 2e ⇌ Sn2+ +0,15 2– + – SO4 + 4H + 2e ⇌ SO2(g) + 2H2O +0,17 Cu2+ + 2e– ⇌ Cu +0,34 – 2H2O + O2 + 4e ⇌ 4OH– +0,40 SO2 + 4H+ + 4e– ⇌ S + 2H2O +0,45 – I2 + 2e ⇌ 2I– +0,54 O2(g) + 2H+ + 2e– ⇌ H2O2 +0,68 3+ – Fe + e ⇌ Fe2+ +0,77 2+ – Hg + 2e ⇌ Hg +0,79 – + – NO3 + 2H + e ⇌ NO2(g) + H2O +0,80 Ag+ + e– ⇌ Ag +0,80 – + – NO3 + 4H + 3e ⇌ NO(g) + 2H2O +0,96 – Br2 + 2e ⇌ 2Br– +1,09 Pt2+ + 2e– ⇌ Pt +1,20 + – MnO2 + 4H + 2e ⇌ Mn2+ + 2H2O +1,21 O2 + 4H+ + 4e– ⇌ 2H2O +1,23 2– + – Cr2O7 + 14H + 6e ⇌ 2Cr3+ + 7H2O +1,33 Cℓ2(g) + 2e– ⇌ 2Cℓ– +1,36 Au3+ + 3e– ⇌ Au +1,42 – + – MnO4 + 8H + 5e ⇌ Mn2+ + 4H2O +1,51 H2O2 + 2H+ + 2e– ⇌ 2H2O +1,77 F2(g) + 2e– ⇌ 2F– +2,87 IEB Copyright © 2018