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heat of reaction for the following reaction:   (NH4)2Cr2O7(s) → Cr2O3(s) + N2(g) +4H2O(g)

heat of reaction for the following reaction:   (NH4)2Cr2O7(s) → Cr2O3(s) + N2(g) +4H2O(g)

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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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)2Cr2O7(s) → Cr2O3(s) + N2(g) +4H2O(g)

 

AH;° (kJ mol¯') U mol- K-') AG (kJ mol"') Species Nitrogen N;g) N(g) NH,(g) NH,(aq) NH,*(aq) 191.5 472.704 153.19 455.579 -46.11 192.3 -16.5 -80.29 111.3 -26.50 -132.51 113.4 -79.31 N;H,(() 50.63 121.2 149.2 (NH,),AsO,(aq) -1268 - NH,Br(s) -270.83 113 -175.2 94.6 NH,C(s) NH,C(aq) -314.4 -201.5 - 300.2 - NH,HCO,(s) -847 12.1 -666 NH,I(s) -201.4 117 -113 NH,NO,(s) - 365.6 151.1 -184.0 220.1 (NH,),SO,(s) NF,(g) -1180.85 -901.67 -125 260.6 -83.3 NO(g) 90.25 210.7 86.57 NO:(g) 33.2 240.0 51,30 N;O(g) 82.05 219.7 104.2 N;O,(g) 83.72 321.28 139.46 304.2 N;O,(g) N;O;(g) 9.16 97.82 11 356 115 N;O;(s) -43.1 178 114 NOC(g) 52.59 264 66,36 HNO,(€) -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) 130.6 H,O() -285.8 69.91 -237.2 H,O(g) -241.8 188.7 -228.6 H,O,() -187.8 109.6 -120.4 Cbromium Cr(s) 23.8 Cr,O;(s) -1139.7 81.2 -1058.1 Cr,Cl;(s) -556.5 123.0 -486.1 (NH,) ¿Cr,O;(s) -1807
Transcribed Image Text:AH;° (kJ mol¯') U mol- K-') AG (kJ mol"') Species Nitrogen N;g) N(g) NH,(g) NH,(aq) NH,*(aq) 191.5 472.704 153.19 455.579 -46.11 192.3 -16.5 -80.29 111.3 -26.50 -132.51 113.4 -79.31 N;H,(() 50.63 121.2 149.2 (NH,),AsO,(aq) -1268 - NH,Br(s) -270.83 113 -175.2 94.6 NH,C(s) NH,C(aq) -314.4 -201.5 - 300.2 - NH,HCO,(s) -847 12.1 -666 NH,I(s) -201.4 117 -113 NH,NO,(s) - 365.6 151.1 -184.0 220.1 (NH,),SO,(s) NF,(g) -1180.85 -901.67 -125 260.6 -83.3 NO(g) 90.25 210.7 86.57 NO:(g) 33.2 240.0 51,30 N;O(g) 82.05 219.7 104.2 N;O,(g) 83.72 321.28 139.46 304.2 N;O,(g) N;O;(g) 9.16 97.82 11 356 115 N;O;(s) -43.1 178 114 NOC(g) 52.59 264 66,36 HNO,(€) -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) 130.6 H,O() -285.8 69.91 -237.2 H,O(g) -241.8 188.7 -228.6 H,O,() -187.8 109.6 -120.4 Cbromium Cr(s) 23.8 Cr,O;(s) -1139.7 81.2 -1058.1 Cr,Cl;(s) -556.5 123.0 -486.1 (NH,) ¿Cr,O;(s) -1807
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