Selected Standard Molar Enthalpies of FormationAH₁AH;AH₁Substance (kJ/mol) Substance (kJ/mol) Substance (kJ/mol)Al₂O3(s)-1675.7 HBr(g)CaCO3(s)-1207,6 HCl(g)CaCl₂(s)Ca(OH)₂(s)CCL₂(E)CCL4(8)CHCI ()CH₂(g)C₂H₂(g)C₂H₁(g)C₂H₂(g)CzHs(g)CH()CH₂OH(E)C₂H₂OH()CO(g)CO₂(g)COCI₂(g)+49.1 Fe₂O₂(8)-239.2 Fe,O4(s)-277.6 FeCl₂(s)CH3COOH(E) –484.3 FeCls(s)-110.5 FeS (8)CS₂(e)CS₂(g)CrCla(g)Cu(NO₂)₂ (8)-795.4 HF(g)-985.2 HCN(g).-128.2 H₂O(E)-95.7 H₂O(g)CuO(s)CuCl(s)CuCl₂(s)-134.1 H₂O₂(e)-74.6 HNO (0)+227.4 H₂PO4(s)+52.4 H₂S(g)-84.0 H₂SO4(e)-103.8 FeO(s)–36.3|NH(8)-92.3 N₂H4(e)-273.3 NH Cl(s)+135.1 NH₂NO(s)-285.8 NO(g)-393.5 PbCl₂(s)-219.1 MgCl₂(s)+89.0 MgO(s)+116.7 Mg(OH)2(s)-556.5 HgS(s)-241.8 NO₂(g)-187.8 N₂O(g)-174.1 N₂O(g)1284.4 PH,(g)-20.6 PCl₂(g)814.0 P,O,(s)-272.0 P4O₁0(s)-824.2 KBr(s)-1118.4 KCl(s)-341.8 KCIO,(s)-399.5 KOH(s)-178.2 AgaCO₂ (s)-359.4 AgCl(s)-641.3 AgNO,(s)-601.6 Ag S(s)-924.5 SFB(g)-58.2 SO₂(g)-302.9 NaCl(s)-411.2 SO₂(g)-157.3 NaOH(s)-425.6 SnCl₂(s)-137.2 Na₂CO3(s)-1130.7 SnCl4(e)-220.1-45.9+50.6-314.4-365.6+91.3+33.2+81.6+11.1+5.4-287.0-2144.3-2984.0-393.8-436.5-397.7-424.6-505.8-127.0-124.4-32.6-1220.5-296.8-395.7-325.1-511.3Note: The enthalpy of formation of an element in its standard state isdefined as zero. 6. First aid kits often contain instant cold packs to treat sprains. These cold packs may contain ammonium nitrate andwater. Ammonium nitrate dissociates in water as shown here: NH,NO, NH₂ (4) + NO₂ (a)You may find this information helpfulHeats of Formation (AH,)NH4+ (aq)NO3 (24)NH,NO,Using your knowledge of thermochemistry, explain why ammonium nitrate is used.kJ/mol-132.8-206.6-365.6

ΔHrxn = ΣniΔHf(Product) - ΣniΔHf(Reactant) Where, ni and ΔHf are Stoichiometric Coefficient and…

6. First aid kits often contain instant cold packs to treat sprains. These cold packs may contain ammonium nitrate and water. Ammonium nitrate dissociates in water as shown here: NH,NO, NH₂ (4) + NO₂ (a) You may find this information helpful Heats of Formation (AH,) NH4+ (aq) NO3 (24) NH,NO, Using your knowledge of thermochemistry, explain why ammonium nitrate is used. kJ/mol -132.8 -206.6 -365.6

6. First aid kits often contain instant cold packs to treat sprains. These cold packs may contain ammonium nitrate and water. Ammonium nitrate dissociates in water as shown here: NH,NO, NH₂ (4) + NO₂ (a) You may find this information helpful Heats of Formation (AH,) NH4+ (aq) NO3 (24) NH,NO, Using your knowledge of thermochemistry, explain why ammonium nitrate is used. kJ/mol -132.8 -206.6 -365.6

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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