Download Exam data sheet.pdf and more Study notes Thermodynamics in PDF only on Docsity! CHEMISTRY 1 EXAMINATIONS – NOVEMBER 2015 DATA SHEET Physical constants Avogadro constant, NA = 6.022 1023 mol–1 Faraday constant, F = 96485 C mol–1 Planck constant, h = 6.626 10–34 J s Speed of light in vacuum, c = 2.998 108 m s–1 Rydberg constant, ER = 2.18 10–18 J Boltzmann constant, kB = 1.381 10–23 J K–1 Permittivity of a vacuum, 0 = 8.854 10–12 C2 J–1 m–1 Gas constant, R = 8.314 J K–1 mol–1 = 0.08206 L atm K–1 mol–1 Charge of electron, e = 1.602 10–19 C Mass of electron, me = 9.1094 10–31 kg Mass of proton, mp = 1.6726 10–27 kg Mass of neutron, mn = 1.6749 10–27 kg Properties of matter Volume of 1 mole of ideal gas at 1 atm and 25 C = 24.5 L Volume of 1 mole of ideal gas at 1 atm and 0 C = 22.4 L Density of water at 298 K = 0.997 g cm–3 Conversion factors 1 atm = 760 mmHg = 101.3 kPa = 1.013 bar 1 Ci = 3.70 1010 Bq 0 C = 273 K 1 Hz = 1 s–1 1 L = 10–3 m3 1 tonne = 103 kg 1 Å = 10–10 m 1 W = 1 J s–1 1 eV = 1.602 10–19 J 1 J = 1 kg m2 s–2 Decimal fractions Decimal multiples Fraction Prefix Symbol Multiple Prefix Symbol 10–3 milli m 103 kilo k 10–6 micro 106 mega M 10–9 nano n 109 giga G 10–12 pico p 1012 tera T CHEMISTRY 1 EXAMINATIONS – NOVEMBER 2015 Standard Reduction Potentials, E Reaction E / V Co3+(aq) + e– Co2+(aq) +1.82 Ce4+(aq) + e– Ce3+(aq) Au+(aq) + e– Au(aq) Pb4+(aq) + 2e– Pb2+(aq) +1.72 +1.69 +1.69 MnO4 –(aq) + 8H+(aq) + 5e– Mn2+(aq) + 4H2O +1.51 Au3+(aq) + 3e– Au(s) +1.50 Cl2 + 2e– 2Cl–(aq) +1.36 O2 + 4H+(aq) + 4e– 2H2O +1.23 Pt2+(aq) + 2e– Pt(s) +1.18 MnO2(s) + 4H+(aq) + e– Mn3+ + 2H2O +0.96 NO3 –(aq) + 4H+(aq) + 3e– NO(g) + 2H2O +0.96 Pd2+(aq) + 2e– Pd(s) +0.92 NO3 –(aq) + 10H+(aq) + 8e– NH4 +(aq) + 3H2O +0.88 Ag+(aq) + e– Ag(s) +0.80 Fe3+(aq) + e– Fe2+(aq) +0.77 Cu+(aq) + e– Cu(s) +0.53 Cu2+(aq) + 2e– Cu(s) +0.34 Sn4+(aq) + 2e– Sn2+(aq) +0.15 2H+(aq) + 2e– H2(g) 0 (by definition) Fe3+(aq) + 3e– Fe(s) –0.04 Pb2+(aq) + 2e– Pb(s) –0.126 Sn2+(aq) + 2e– Sn(s) –0.136 Ni2+(aq) + 2e– Ni(s) –0.24 Co2+(aq) + 2e– Co(s) –0.28 Cd2+(aq) + 2e– Cd(s) –0.40 2CO2(g) + 2H+(aq) –+ 2e– → H2C2O4(aq) -0.43 Fe2+(aq) + 2e– Fe(s) –0.44 Cr3+(aq) + 3e– Cr(s) –0.74 Zn2+(aq) + 2e– Zn(s) –0.76 2H2O + 2e– H2(g) + 2OH–(aq) –0.83 Cr2+(aq) + 2e– Cr(s) –0.89 Al3+(aq) + 3e– Al(s) –1.68 Mg2+(aq) + 2e– Mg(s) –2.36 Na+(aq) + e– Na(s) –2.71 Ca2+(aq) + 2e– Ca(s) –2.87 K+(aq) ) + e– → K(s) –2.94 Li+(aq) + e– Li(s) –3.04
