Could you please answer number 2 and 3 I. AHn for the reaction below was determined using bond dissociation energies (BDES) to be -57 kJ. Using the table of BDE below,find the bond energy for H-Br.'rxnH BrHc=CH+ HBr+ H-C-C-HBondС-СC=CC-HС-BrBDE (kJ/mol)348614413276II. Use heats of formation to find the standard heat of reaction (AH° rxn) for the reaction shown above. C2H4 and HBr are both gases andAH°; for CH3CH2B (8) is -85.3 kJ/mol. Use T16-4-1 to find any additional values of AH°; needed.III. Why is there a dfference between the reaction enthalpies calculated by these different approaches? The standard enthalpies of formation are available for a large number of compoundsin thermodynamic tablesTable T16-4-1. Selected standard enthalpies of formation, AH°;(298 K, 1 atm)AH°fAH°fSubstanceFormulaSubstanceFormula(kJ/mol)(kJ/mol)acetic acidC2H4O2(!)-487.0 hydrogen bromideHBr(g)-36.2- .......acetyleneC2H2(g)226.8 hydrogen chlorideHCI(g)-92.3ammoniaNH 3(g)-46.2 hydrogen fluorideHF(g)-268.6aluminum oxideAl 203(s)-1675.7 hydrogen iodideHI(g)25.9-.................benzeneC6H6(t)49.0 hydrogen peroxideH202({)-187.8bromineBr 2(g)30.907 iron(II) oxideFe203(s)-824.2calcium carbonateCaCO 3(s)-1207.1 methaneCH 4(g)-74.8calcium oxideCaO(s)-635.5 methanolCH3OH(t)-238.6carbon dioxideCO 2(g)-393.5O 3(g)142.3Ozonecarbon monoxideCO(g)-110.5 propaneC3H8(g)-103.8carbon tetrachlorideCCI 4(!)-193.3 silver chlorideAgCI( s)-127.0diamondC(s)1.9 sodium bicarbonateNaHCO 3(s)-947.7ethaneC2H6(g)-84.7 sodium carbonateNa 2CO3(s)-1130.9ethanolC2H5OH(g)-235.1 sodium chlorideNaCI(s)-410.9ethanolC2H5OH(?)-277.7 sodium hydroxideNaOH(s)-425.6ethyl bromideC2H3Br(g)-97.6sucroseC 12H22011(s)-2221.0ethyleneC2H4(g)52.3 sulfur trioxideSO 3(g)-395.2formaldehydeCH20(g)-108.6 waterH20(t)-285.8glucoseC6H1206(s)-1273.0 water vaporH20(g)-241.8

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I. AHxn for the reaction below was determined using bond dissociation energies (BDES) to be -57 kJ. Using the table of BDE below, find the bond energy for H-Br. H C=C H H Br Н-С-ҫ-н + HBr H Bond С-С C=C C-H C-Br BDE (kJ/mol) 348 614 413 276 II. Use heats of formation to find the standard heat of reaction (AH°xn) for the reaction shown above. C2H4 and HBr are both gases and AH°; for CH3CH,Br (8) is -85.3 kJ/mol. Use T16-4-1 to find any additional values of AH°; needed.

I. AHxn for the reaction below was determined using bond dissociation energies (BDES) to be -57 kJ. Using the table of BDE below, find the bond energy for H-Br. H C=C H H Br Н-С-ҫ-н + HBr H Bond С-С C=C C-H C-Br BDE (kJ/mol) 348 614 413 276 II. Use heats of formation to find the standard heat of reaction (AH°xn) for the reaction shown above. C2H4 and HBr are both gases and AH°; for CH3CH,Br (8) is -85.3 kJ/mol. Use T16-4-1 to find any additional values of AH°; needed.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter19: The Chemistry Of The Main-group Elements

Section: Chapter Questions

Problem 68QRT

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