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Consider the following reaction for the production of hydrogen cyanide.  NH3 (g)  +   S(s) +   CH4 (g) →   HCN (g) +   H2S (g) Assume standard state conditions. Use the thermodynamic data (attached)  for ∆H°, ∆S°, and ∆G° a) When the equation is balanced, what is the sum of the coefficient?  b)ΔH°rxn =  c) ΔS°rxn

Consider the following reaction for the production of hydrogen cyanide.  NH3 (g)  +   S(s) +   CH4 (g) →   HCN (g) +   H2S (g) Assume standard state conditions. Use the thermodynamic data (attached)  for ∆H°, ∆S°, and ∆G° a) When the equation is balanced, what is the sum of the coefficient?  b)ΔH°rxn =  c) ΔS°rxn

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Consider the following reaction for the production of hydrogen cyanide.

 NH3 (g)  +   S(s) +   CH4 (g) →   HCN (g) +   H2S (g)

Assume standard state conditions. Use the thermodynamic data (attached)  for ∆H°, ∆S°, and ∆G°

a) When the equation is balanced, what is the sum of the coefficient? 

b)ΔH°rxn = 

c) ΔS°rxn =

d)  ΔG°rxn =

e) Temperature (K) =

g) At  Low temp is the reaction spontaneous or not spontaneous? 

 

19 Thermodynamic Quantities for Selected Substances at 298.15 K (25°C) AHf AGf AS° AHf (kJ/mol) AGf (kJ/mol) AS° Substance (kJ/mol) (kJ/mol) (J/mol-K) Substance (J/mol-K) Aluminum Chlorine CI (g) C (аq) Cl2 (g) HCI (aq) HCI (g) Chromium Al (s) AIC13 (s) 28.32 121.7 105,7 - 131,2 165.2 - 705.6 - 630.0 109.3 - 167.2 56.5 Al203 (s) - 1669.8 1576.5 51.00 222,96 - 131.2 -95.27 - 167.2 56.5 186,69 Barium - - Ba(s) BaCO3(s) BaO(s) Beryllium Be(s) 63.2 -92.30 - 1216,3 - 553.5 - 1137.6 112.1 Cr (g) Cr (s) Cr203 (s) Cobalt Со (g) Copper Cu (s) CuCl2 (s) CuO (s) - 525.1 70.42 397.5 352.6 174.2 23.6 9.44 - 1139.7 - 1058.1 81.2 BeO(s) Be(ОН)2(8) 13.77 50.21 - 608.4 -579,1 - 817.9 - 905.8 439 393 179 Bromine 111.8 - 120.9 Br(g) Br-(aq) Br2(g) Br2(1) HBr(g) Calcium Ca(g) Ca(s) CaCO3 (s, calcite) CaCl2(s) CaF2(s) CaO(s) Ca(OH)2(s) CaSO4(s) 82.38 174.9 33.30 108.1 - 102.8 - 167,7 - 128,3 - 147.9 80.71 - 205.9 30,71 3.14 245.3 - 156,1 42,59 - Cu20 (s) Fluorine F (g) F- (aq) F2 (g) HF (g) Hydrogen 152.3 - 170.7 92.36 -36.23 -53.22 198.49 80.0 61.9 158.7 - 13.8 202,7 179.3 145,5 154.8 41.4 - 332.6 - 278,8 - 1207.1 - 795.8 -1128.76 92.88 - 268.61 -270.70 173.51 - 7484 104.6 - 1219,6 - 1167.3 68.87 H (g) 217.94 203.26 114.60 - 635.5 - 986.2 -604.17 - 898.5 39.75 83.4 H+(aq) H+ (g) Н2 (g) Iodine I (g) I (aq) I2 (g) I2 (s) НI (g) 1536.2 1517.0 108.9 - 1434.0 - 1321.8 106.7 130.58 Carbon 718.4 C(g) C(s, diamond) C(s, graphite) CCI4 (g) CCI4 (1) 672.9 158.0 106.60 70.16 180,66 1.88 2.84 2.43 -55.19 -51.57 111.3 5.69 62.25 19.37 260,57 - 106.7 - 139.3 -64.0 309.4 116.73 - 68.6 214.4 25.94 1.30 206.3 - 679.9 - 74,8 CF4 (g) CH4 (g) C2H2 (g) C2H4 (g) C2H6 (g) C2H5 (g) C4H10 (g) - 635.1 262.3 Iron - 50.8 Fe (g) Fe (s) Fe2+ (aq) Fe3+ (aq) FeCl2 (s) FeCl3 (s) FeO (s) Fe203 (s) 186.3 415,5 369,8 180,5 226,7 209,2 200.8 27.15 52.30 68.11 219.4 -87.86 -84.93 113.4 -84.68 -32.89 229.5 -47.69 -10.54 293.3 -103.85 -23.47 269.9 -341.8 - 302.3 1179 -124.73 - 15.0 310.0 - 400 - 334 142.3 - 271.9 C4H10 (1) C6H6 (g) C6H6 (1) CH3OH (g) CH3OH (1) C2H5OH (g) C5H5OH (1) C6H1206 (s) CO (g) CO2 (g) HC2H3O2 (1) H2CO (g) НзСCНО (g) Cesium Cs (g) Cs (s) CSCI (s) - 147.6 - 15.0 231.0 - 255,2 60.75 82.9 129.7 269.2 -822.16 -740.98 89.96 - 1117.1 - 171.5 - 1014.2 - 160.1 49.0 124.5 172.8 Fez04 (s) FeS2 (s) 146.4 - - 201.2 - 161.9 237.6 52.92 - 238.6 -166,23 126.8 Lead - 235,1 - 168.5 282.7 РЬ (s) PbBr2 (s) 68.85 - 277,7 -174.76 160.7 - 277.4 - 260.7 161 -1273.02 - 910.4 212.1 РЬСОЗ (s) -6994 - 625.5 131.0 - 110.5 - 393,5 - 137.2 Pb(NO3)2 (aq) Pb(NO3)2 (s) PbO (s) 197.9 -421,3 -246.9 303,3 - 394.4 213.6 - 451.9 - 487.0 - 392.4 159.8 - 217.3 - 187.9 68.70 -116. -110 219 Lithium -166 -133.7 266 Li (g) Li (s) Lit (g) LICI (s) 159,3 126.6 138,8 29.09 76.50 49.53 175.6 685.7 648.5 133.0 85.15 - 408.3 - 384.0 59.30 - 442.8 -414.4 101.2
Transcribed Image Text:19 Thermodynamic Quantities for Selected Substances at 298.15 K (25°C) AHf AGf AS° AHf (kJ/mol) AGf (kJ/mol) AS° Substance (kJ/mol) (kJ/mol) (J/mol-K) Substance (J/mol-K) Aluminum Chlorine CI (g) C (аq) Cl2 (g) HCI (aq) HCI (g) Chromium Al (s) AIC13 (s) 28.32 121.7 105,7 - 131,2 165.2 - 705.6 - 630.0 109.3 - 167.2 56.5 Al203 (s) - 1669.8 1576.5 51.00 222,96 - 131.2 -95.27 - 167.2 56.5 186,69 Barium - - Ba(s) BaCO3(s) BaO(s) Beryllium Be(s) 63.2 -92.30 - 1216,3 - 553.5 - 1137.6 112.1 Cr (g) Cr (s) Cr203 (s) Cobalt Со (g) Copper Cu (s) CuCl2 (s) CuO (s) - 525.1 70.42 397.5 352.6 174.2 23.6 9.44 - 1139.7 - 1058.1 81.2 BeO(s) Be(ОН)2(8) 13.77 50.21 - 608.4 -579,1 - 817.9 - 905.8 439 393 179 Bromine 111.8 - 120.9 Br(g) Br-(aq) Br2(g) Br2(1) HBr(g) Calcium Ca(g) Ca(s) CaCO3 (s, calcite) CaCl2(s) CaF2(s) CaO(s) Ca(OH)2(s) CaSO4(s) 82.38 174.9 33.30 108.1 - 102.8 - 167,7 - 128,3 - 147.9 80.71 - 205.9 30,71 3.14 245.3 - 156,1 42,59 - Cu20 (s) Fluorine F (g) F- (aq) F2 (g) HF (g) Hydrogen 152.3 - 170.7 92.36 -36.23 -53.22 198.49 80.0 61.9 158.7 - 13.8 202,7 179.3 145,5 154.8 41.4 - 332.6 - 278,8 - 1207.1 - 795.8 -1128.76 92.88 - 268.61 -270.70 173.51 - 7484 104.6 - 1219,6 - 1167.3 68.87 H (g) 217.94 203.26 114.60 - 635.5 - 986.2 -604.17 - 898.5 39.75 83.4 H+(aq) H+ (g) Н2 (g) Iodine I (g) I (aq) I2 (g) I2 (s) НI (g) 1536.2 1517.0 108.9 - 1434.0 - 1321.8 106.7 130.58 Carbon 718.4 C(g) C(s, diamond) C(s, graphite) CCI4 (g) CCI4 (1) 672.9 158.0 106.60 70.16 180,66 1.88 2.84 2.43 -55.19 -51.57 111.3 5.69 62.25 19.37 260,57 - 106.7 - 139.3 -64.0 309.4 116.73 - 68.6 214.4 25.94 1.30 206.3 - 679.9 - 74,8 CF4 (g) CH4 (g) C2H2 (g) C2H4 (g) C2H6 (g) C2H5 (g) C4H10 (g) - 635.1 262.3 Iron - 50.8 Fe (g) Fe (s) Fe2+ (aq) Fe3+ (aq) FeCl2 (s) FeCl3 (s) FeO (s) Fe203 (s) 186.3 415,5 369,8 180,5 226,7 209,2 200.8 27.15 52.30 68.11 219.4 -87.86 -84.93 113.4 -84.68 -32.89 229.5 -47.69 -10.54 293.3 -103.85 -23.47 269.9 -341.8 - 302.3 1179 -124.73 - 15.0 310.0 - 400 - 334 142.3 - 271.9 C4H10 (1) C6H6 (g) C6H6 (1) CH3OH (g) CH3OH (1) C2H5OH (g) C5H5OH (1) C6H1206 (s) CO (g) CO2 (g) HC2H3O2 (1) H2CO (g) НзСCНО (g) Cesium Cs (g) Cs (s) CSCI (s) - 147.6 - 15.0 231.0 - 255,2 60.75 82.9 129.7 269.2 -822.16 -740.98 89.96 - 1117.1 - 171.5 - 1014.2 - 160.1 49.0 124.5 172.8 Fez04 (s) FeS2 (s) 146.4 - - 201.2 - 161.9 237.6 52.92 - 238.6 -166,23 126.8 Lead - 235,1 - 168.5 282.7 РЬ (s) PbBr2 (s) 68.85 - 277,7 -174.76 160.7 - 277.4 - 260.7 161 -1273.02 - 910.4 212.1 РЬСОЗ (s) -6994 - 625.5 131.0 - 110.5 - 393,5 - 137.2 Pb(NO3)2 (aq) Pb(NO3)2 (s) PbO (s) 197.9 -421,3 -246.9 303,3 - 394.4 213.6 - 451.9 - 487.0 - 392.4 159.8 - 217.3 - 187.9 68.70 -116. -110 219 Lithium -166 -133.7 266 Li (g) Li (s) Lit (g) LICI (s) 159,3 126.6 138,8 29.09 76.50 49.53 175.6 685.7 648.5 133.0 85.15 - 408.3 - 384.0 59.30 - 442.8 -414.4 101.2
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