TestFivePacketSolutions(3)

Test 5 Packet (New Material) Ideal Gas Constant For this table, the units of R are the units of pressure (column) times the units of volume (row) divided by moles time Kelvin, so for the grey square, the value of R = 8.314 and has units of kPa*L/mole-K R = atm Pa kPa Psi mmHg (torr) mL 82.0528 8,314,000 8,314 1205.85 62360.1 L 0.082053 8,314 8.314 1.24058 62.360 Useful values of R: R = 8.314 kPa*L/mole-K R = 8.314 J/mole R = 0.008314 kJ/mole Conversion Factors atm Pa kPa Psi mmHg (torr) 1 atm = 1 101,325 101.325 14.696 760 1 Pa = 9.87 * 10 -6 1 0.001 0.000145 0.00750 1 kPa = 0.00987 1000 1 0.145 7.50 1 psi = 0.0680 6895 6.895 1 51.7 1 mmHg (torr) = 0.00132 133.3 0.133 0.0193 1 1

Short Table of Thermodynamic Values Compound ∆ H f 0 (kJ/mole) Al 2 O 3(s) -1675.7 AlN (s) -317.98 As 2 O 3(s) -654.8 BaO (s) -553.54 BaTiO 3(s) -1659.8 Be 2 C (s) -116.99 BeO (s) -608.35 C 2 H 6(g) -84.684 CaO (s) -635.09 CaTiO 3(s) -1660.6 CCl 4(g) -100.42 CH 2 Cl 2(g) -95.521 CH 3 Cl (g) -86.316 CH 4(g) -74.873 CHCl 3(g) -101.25 CO 2(g) -393.51 Cu 2 O (s) -170.71 CuO (s) -156.06 Fe 3 C (s) 25.104 FeCO 3(s) -740.57 FeO (s) -272.04 GaF 3(s) -921.53 GaI 3(s) -239.33 HCl (g) -92.312 TiO 2(s) -944.75 2

Short Table of Heat Capacities Compound Cp (J/g- ̊ C) Acetone 2.15 Ag (s) 0.24 Air 1.02 Al (s) 0.90 Au (s) 0.84 Cu (s) 0.385 Ethyl Alcohol (Ethanol) 2.46 Fe (s) 0.444 Glycerin 2.43 H 2(g) 14.267 He (g) 5.3 H 2 O (l) 4.181 Methyl Alcohol (Methanol) 2.51 Mg (s) 1.02 Ni (s) 0.44 Pb (s) 0.16 Sn (s) 0.21 Zn (s) 0.39 3

Electrolytes What is an electrolyte? A compound that improves the conductivity of liquid by creating charge carriers From the list below, sort each compound into the appropriate category: Non-electrolyte Weak Electrolyte Strong Electrolyte Fructose Sucrose C 2 H 4 CH 2 Cl 2 HNO 2 Mg(OH) 2 CaSO 4 HC 2 H 3 O 2 Ca 3 (PO 4 ) 2 H 2 SO 3 Fe 2 (CO 3 ) 3 HF NaOH HCl NaCl Li 2 CO 3 Cs 3 PO 4 Ca(OH) 2 Mg(NO 3 ) 2 Ba(C 2 H 3 O 2 ) 4

Pressure Conversion Problems Convert 101.3 kPa to atmospheres 1.000 atm Convert 13.25 psi to torr 685.2 torr Convert 3.79 atm to mmHg 2,880 mmHg Convert 578 mmHg to kPa 77.1 kPa Mole Fractions What is the mole fraction of O 2 in a mixture that is 0.250 moles O 2 and 0.500 moles N 2 ? 0.333 What is the mole fraction of O 2 in a mixture that is 0.250 moles O 2 , 0.500 moles N 2 , and 0.250 moles H 2 ? 0.250 What is the mole fraction of N 2 that is 0.250 g O 2 and 0.500 grams N 2 ? 0.696 What is the mole fraction of O 2 in a mixture that is 0.250 grams O 2 , 0.500 grams N 2 , and 0.250 grams H 2 ? 0.0519 5