Question
1-Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free energy of...
1-Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction free energy of the following chemical reaction: Round your answer to zero decimal places.
N2(g)+3H2(g)---2NH3(g)
Round your answer to zero decimal places.
2-Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction entropy of the following chemical reaction:
→+4H2O2lPbSs+PbSO4s4H2Ol
Round your answer to zero decimal places.
| substance |
Δ Hf° (kJ/mol) |
Δ Gf° (kJ/mol) |
S
° (J/mol∙K) |
| Aluminum | |||
| Al3+ (aq) | --- | -485.0 | --- |
| Al (s) | 0 | 0 | 28.3 |
| Al2O3 (s) | -1675.7 | -1582.3 | 50.9 |
| Al(OH)3 (s) | --- | -1147.25 | --- |
| Bromine | |||
| Br− (aq) | --- | -104.0 | --- |
| Br2 (l) | 0 | 0 | 152.2 |
| Br2 (g) | 30.9 | 3.1 | 245.5 |
| HBr (g) | -36.3 | -53.4 | 198.7 |
| Calcium | |||
| Ca2+ (aq) | --- | -553.6 | --- |
| CaCl2 (s) | -795.4 | --- | --- |
| CaO (s) | -634.9 | --- | --- |
| Ca(OH)2 (s) | -985.2 | --- | --- |
| Ca3(PO4)2 (s) | --- | -3884.7 | --- |
| Carbon | |||
| C (s) | 0 | 0 | 5.7 |
| CCl4 (g) | -95.7 | -64.0 | 309.4 |
| CCl4 (l) | -128.2 | -68.6 | 214.4 |
| CCl4 (s) | -136.8 | --- | --- |
| CH4 (g) | -74.6 | -50.5 | 186.3 |
| C2H2 (g) | 227.4 | --- | --- |
| C2H6 (g) | -84.0 | --- | --- |
| C3H8 (g) | -103.85 | -23.4 | 270.3 |
| C4H10 (g) | -125.7 | -15.7 | 310.0 |
| C4H10 (l) | -147.3 | -15.0 | 231.0 |
| C6H6 (l) | 49.1 | 124.5 | 173.4 |
| C6H6 (g) | 82.9 | 129.7 | 269.2 |
| CH3OH (l) | -239.2 | -166.6 | 126.80 |
| CH3OH (g) | -201.0 | -162.3 | 239.9 |
| (CH3)2(CH2)2O (l) | -279.5 | -346.74 | 253.5 |
| C6H12O6 (s) | -1237.3 | -910.4 | 212.1 |
| CO (g) | -110.5 | -137.2 | 197.7 |
| CO2 (g) | -393.5 | -394.4 | 213.8 |
| C2H5OH (l) | -277.6 | -174.8 | 160.7 |
| C2H5OH (g) | -234.8 | -167.9 | 281.6 |
| HCH3CO2 (l) | -484.3 | -389.9 | 159.8 |
| HCH3CO2 (s) | -472.8 | --- | --- |
| HCH3CO2 (g) | -432.2 | --- | 283.5 |
| HCN (l) | 108.9 | 125.0 | 112.8 |
| HCN (g) | 135.1 | 124.7 | 201.8 |
| CS2 (s) | 93.8 | --- | --- |
| CS2 (l) | 89.0 | 64.6 | 151.3 |
| CS2 (g) | 116.7 | 67.1 | 237.8 |
| Chlorine | |||
| Cl2 (g) | 0 | 0 | 223.1 |
| Cl− (aq) | --- | -131.2 | --- |
| HCl (aq) | -167. | --- | --- |
| HCl (g) | -92.3 | -95.3 | 186.9 |
| Chromium | |||
| CrO42− (aq) | --- | -727.8 | --- |
| Fluorine | |||
| F2 (g) | 0 | 0 | 202.8 |
| HF (g) | -273.3 | -275.4 | 173.8 |
| Hydrogen | |||
| H2 (g) | 0 | 0 | 130.7 |
| Iron | |||
| Fe (s) | 0 | 0 | 27.3 |
| FeCl3 (s) | -399.5 | -334.0 | 142.3 |
| Fe2O3 (s) | -824.2 | -742.2 | 87.4 |
| Lead | |||
| Pb2+ (aq) | --- | -24.4 | --- |
| PbBr2 (s) | -278.7 | -261.9 | 161.5 |
| PbS (s) | -100.4 | -98.7 | 91.2 |
| PbSO4 (s) | -920.0 | -813.0 | 148.5 |
| Magnesium | |||
| MgCl2 (s) | -641.3 | -591.8 | 89.6 |
| MgO (s) | -601.6 | -569.3 | 27.0 |
| Mercury | |||
| Hg (g) | 61.4 | 31.8 | 175.0 |
| Hg (l) | 0 | 0 | 75.9 |
| Hg (s) | -2.29 | --- | --- |
| Hg22+ (aq) | --- | 153.5 | --- |
| Hg2Cl2 (s) | --- | -210.7 | --- |
| Nitrogen | |||
| N2 (g) | 0 | 0 | 191.6 |
| N2H4 (g) | 95.4 | 159.4 | 238.5 |
| N2H4 (l) | 50.6 | 149.3 | 121.2 |
| NH3 (g) | -45.9 | -16.4 | 192.8 |
| NH3 (l) | -69.54 | -26.50 | 95.09 |
| NH4NO3 (s) | -365.6 | -183.9 | 151.1 |
| NO (g) | 91.3 | 87.6 | 210.8 |
| NO2 (g) | 33.2 | 51.3 | 240.1 |
| NOCl (g) | 51.7 | 66.1 | 261.7 |
| N2O4 (g) | 11.1 | 99.8 | 304.4 |
| HNO2 (g) | -79.5 | --- | --- |
| HNO3 (l) | -174.1 | -80.7 | 155.6 |
| HNO3 (g) | -133.9 | -73.5 | 266.9 |
| Oxygen | |||
| OH− (aq) | --- | -157.2 | --- |
| H2O (l) | -285.8 | -237.1 | 70.0 |
| H2O (g) | -241.8 | -228.6 | 188.8 |
| O2 (g) | 0 | 0 | 205.2 |
| H2O2 (l) | -187.8 | -120.4 | 109.6 |
| H2O2 (g) | -136.3 | -105.6 | 232.7 |
| Phosphorus | |||
| P4 (s) | 0 | 0 | 41. |
| P4 (g) | 58.9 | 24.4 | 280.0 |
| PCl3 (g) | -287.0 | -267.8 | 311.8 |
| PCl3 (l) | -319.7 | -272.3 | 217.1 |
| PF5 (g) | -1594.4 | -1520.7 | 300.8 |
| PO43− (aq) | --- | -1018.7 | --- |
| H3PO4 (l) | -1271.7 | --- | --- |
| H3PO4 (s) | -1284.4 | -1124.3 | 110.5 |
| P4O10 (s) | -2984. | -2675.2 | 228.9 |
| Potassium | |||
| KBr (s) | -393.4 | -380.7 | 95.9 |
| KNO3 (s) | -492.7 | -393.13 | 132.9 |
| Silver | |||
| Ag+ (aq) | --- | 77.1 | --- |
| Ag2CrO4 (s) | --- | -641.8 | --- |
| Sodium | |||
| NaCl (s) | -411.2 | --- | --- |
| NaOH (s) | -425.8 | --- | --- |
| Sulfur | |||
| S8 (s) | 0 | 0 | 32.0 |
| H2S (g) | -20.6 | --- | --- |
| H2SO4 (l) | -814.0 | --- | --- |
| SF6 (g) | -1220.5 | -1116.5 | 291.5 |
| Tin | |||
| Sn (s) | 0 | 0 | 51.2 |
| SnO2 (s) | -577.6 | -515.8 | 49.0 |
| Titanium | |||
| TiCl4 (g) | -763.2 | -726.3 | 353.2 |
| TiCl4 (l) | -804.2 | -737.2 | 252.3 |
| TiO2 (s) | -944.0 | -888.8 | 50.6 |
Homework Answers
Answer #1
1. Standard free energy of reaction = -33 kJ
2. Standard entropy of reaction = -101 J/K
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