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Ammonium dichromate is sometimes known as Vesuvian Fire, because of its use in demonstrations of tabletop "volcanoes". Using the given data, calculate the heat of reaction for the following reaction: (NH4),Cr,O;(s) → Cr,O3(s) + N½(g) +4H,0(g) AH ( mol") U mol K) AG (J mol) ... Species Nitrogen 191.5 N(g) NHg) 472.704 153.19 455.579 -46.11 192.3 -16.5 NH,(ag) -80.29 III.3 -26.50 NH,"(4) -132.51 113.4 -79.31 50.63 121.2 1492 (NHAOfaq) -1268 -270.83 113 -175.2 NH.C) NH,Cag) NHHCO6) -3144 -300.2 94.6 -201.5 -847 12.1 -666 NH,16) -201.4 117 -113 -3656 -1180.85 NH,NO,6) 151.1 -184.0 (NH),SO49) 220.1 -901.67 NFAg) --125 260.6 -83.3 NOg) 90.25 210.7 86.57 NO 33.2 240.0 51.30 NO(g) 82.05 219.7 104.2 83.72 321.28 139.46 NO 9.16 304.2 97.82 N,O(g) 356 115 NO4) -43.1 178 114 NOCg) 52.59 264 66.36 HNO(0 -174.1 155.6 -80.79 HNO -135.1 266.2 -74.77 HNO, (ag) -206.6 146 -110.5 Hydrogen Hg) 218.0 114.6 203.3 130.6 -285.8 69.91 -237.2 HOg) -241.8 188.7 -228.6 OFO'H Chremium -1878 109.6 -120.4 Crs) 23.8 -1058.1 CrO,69) CrC) -1139.7 812 -556.5 123.0 -486.1 (NH) Cr0) -1807

Ammonium dichromate is sometimes known as Vesuvian Fire, because of its use in demonstrations of tabletop "volcanoes". Using the given data, calculate the heat of reaction for the following reaction: (NH4),Cr,O;(s) → Cr,O3(s) + N½(g) +4H,0(g) AH ( mol") U mol K) AG (J mol) ... Species Nitrogen 191.5 N(g) NHg) 472.704 153.19 455.579 -46.11 192.3 -16.5 NH,(ag) -80.29 III.3 -26.50 NH,"(4) -132.51 113.4 -79.31 50.63 121.2 1492 (NHAOfaq) -1268 -270.83 113 -175.2 NH.C) NH,Cag) NHHCO6) -3144 -300.2 94.6 -201.5 -847 12.1 -666 NH,16) -201.4 117 -113 -3656 -1180.85 NH,NO,6) 151.1 -184.0 (NH),SO49) 220.1 -901.67 NFAg) --125 260.6 -83.3 NOg) 90.25 210.7 86.57 NO 33.2 240.0 51.30 NO(g) 82.05 219.7 104.2 83.72 321.28 139.46 NO 9.16 304.2 97.82 N,O(g) 356 115 NO4) -43.1 178 114 NOCg) 52.59 264 66.36 HNO(0 -174.1 155.6 -80.79 HNO -135.1 266.2 -74.77 HNO, (ag) -206.6 146 -110.5 Hydrogen Hg) 218.0 114.6 203.3 130.6 -285.8 69.91 -237.2 HOg) -241.8 188.7 -228.6 OFO'H Chremium -1878 109.6 -120.4 Crs) 23.8 -1058.1 CrO,69) CrC) -1139.7 812 -556.5 123.0 -486.1 (NH) Cr0) -1807

Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter12: Thermodynamic Processes And Thermochemistry
Section: Chapter Questions
Problem 30P
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Ammonium dichromate is sometimes known as Vesuvian Fire, because of its use in demonstrations of tabletop "volcanoes". Using the given data, calculate the heat of reaction for the following reaction: (NH4)½Cr207(s) –→ Cr2O3(s) + N½(g) +4H,O(g) AH (k mol) AG U mol K) ... Species mol") Nitrogem Ng) 191.5 Ng) NH,(g) 472.704 153.19 455.579 -46.11 192.3 -16.5 NH,(aq) NH,"(aq) - 80.29 III.3 -26.50 -132.51 113.4 -79.31 N,HC) 50.63 121.2 149.2 (NH),AsO/aq) -1268 NH,Br(s) -270.83 113 -175.2 NH,C6) NH,Caq) NH,HCO,6) -314.4 94.6 -201.5 -300.2 -847 12.1 -666 NH,I(s) -201.4 117 -113 NH,NO,) -3656 151.1 -184.0 (NH),SO) -1180.85 220.1 -901.67 NF(g) NO(g) NOg) -125 260.6 -83.3 90.25 210.7 86.57 33.2 240.0 31.30 N,Og) 82.05 219.7 104.2 N,O,(g) 83.72 321.28 139.46 N,Odg) 9.16 304.2 97.82 N,O(g) 356 115 -43.1 178 114 NOCIG) 52.59 264 66.36 HNO(0 -174.1 155.6 -80.79 HNO(g) -135.1 266.2 -74.77 HNO, (aq) -206.6 146 -110.5 Hydrogen H(g) 218.0 114.6 203.3 H(g) H,O() 130.6 -285.8 69.91 -237.2 -241.8 188.7 H,O(g) H,O,(0) -228.6 -187.8 109.6 -120.4 Chromium Crs) 23.8 Cr,O,() -1139.7 81.2 -1058.1 Cr,Cl) (NH) CrO() -556.5 123.0 -486.1 -1807
Transcribed Image Text:Ammonium dichromate is sometimes known as Vesuvian Fire, because of its use in demonstrations of tabletop "volcanoes". Using the given data, calculate the heat of reaction for the following reaction: (NH4)½Cr207(s) –→ Cr2O3(s) + N½(g) +4H,O(g) AH (k mol) AG U mol K) ... Species mol") Nitrogem Ng) 191.5 Ng) NH,(g) 472.704 153.19 455.579 -46.11 192.3 -16.5 NH,(aq) NH,"(aq) - 80.29 III.3 -26.50 -132.51 113.4 -79.31 N,HC) 50.63 121.2 149.2 (NH),AsO/aq) -1268 NH,Br(s) -270.83 113 -175.2 NH,C6) NH,Caq) NH,HCO,6) -314.4 94.6 -201.5 -300.2 -847 12.1 -666 NH,I(s) -201.4 117 -113 NH,NO,) -3656 151.1 -184.0 (NH),SO) -1180.85 220.1 -901.67 NF(g) NO(g) NOg) -125 260.6 -83.3 90.25 210.7 86.57 33.2 240.0 31.30 N,Og) 82.05 219.7 104.2 N,O,(g) 83.72 321.28 139.46 N,Odg) 9.16 304.2 97.82 N,O(g) 356 115 -43.1 178 114 NOCIG) 52.59 264 66.36 HNO(0 -174.1 155.6 -80.79 HNO(g) -135.1 266.2 -74.77 HNO, (aq) -206.6 146 -110.5 Hydrogen H(g) 218.0 114.6 203.3 H(g) H,O() 130.6 -285.8 69.91 -237.2 -241.8 188.7 H,O(g) H,O,(0) -228.6 -187.8 109.6 -120.4 Chromium Crs) 23.8 Cr,O,() -1139.7 81.2 -1058.1 Cr,Cl) (NH) CrO() -556.5 123.0 -486.1 -1807
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