## Calculating Enthalpy### a) Given Reactions:1. \(2\text{Fe}(s) + 1.5 \text{O}_2(g) \rightarrow \text{Fe}_2\text{O}_3(s)\), \(\Delta H^\circ_r = -206 \, \text{kJ mol}^{-1}\)2. \(3 \text{Fe}(s) + 2 \text{O}_2(g) \rightarrow \text{Fe}_3\text{O}_4(s)\), \(\Delta H^\circ_r = -136 \, \text{kJ mol}^{-1}\)### Task:Determine \(\Delta H^\circ_r\) for the following reaction:\[4\text{Fe}_2\text{O}_3(s) + \text{Fe}(s) \rightarrow 3\text{Fe}_3\text{O}_4(s)\]Is this reaction exothermic or endothermic? Is this enough information to inform whether this reaction occurs or not?### b) Given Data:- \(\Delta H^\circ_{\text{vap}}\) of water at 373 K = 40.7 kJ mol\(^{-1}\)- \(\overline{C}_p(l)=75.2 \, \text{J mol}^{-1}\text{K}^{-1}\)- \(\overline{C}_p(g)=33.6 \, \text{J mol}^{-1}\text{K}^{-1}\)### Task:Calculate \(\Delta H^\circ_{\text{vap}}\) of water at 298 K.

Answered: Image /qna-images/answer/e94ad08f-5d09-4575-9492-73adad07fb23.jpg

Calculating enthalpy: a) Given 2Fe(s) + 1.5 O₂(g) → Fe₂O3 (S) AH, = = -206 kJ mol-¹, 3 Fe(s) + 2 O₂(g) → Fe3O4 (s) determine AH, for the following reaction: AH = -136 kJ mol-¹, 4Fe₂O3(s) + Fe(s) →3Fe3O4 (S) Is this reaction exothermic or endothermic? Is this enough information to inform whether this reaction occurs or not? b) Given AH vap of water at 373 K = 40.7 kJ mol¹¹, C₂(l)=75.2 J mol-¹K-¹ and Cp (g)=33.6 J mol¹¹K¹, calculate AHvap of water at 298 K.

Calculating enthalpy: a) Given 2Fe(s) + 1.5 O₂(g) → Fe₂O3 (S) AH, = = -206 kJ mol-¹, 3 Fe(s) + 2 O₂(g) → Fe3O4 (s) determine AH, for the following reaction: AH = -136 kJ mol-¹, 4Fe₂O3(s) + Fe(s) →3Fe3O4 (S) Is this reaction exothermic or endothermic? Is this enough information to inform whether this reaction occurs or not? b) Given AH vap of water at 373 K = 40.7 kJ mol¹¹, C₂(l)=75.2 J mol-¹K-¹ and Cp (g)=33.6 J mol¹¹K¹, calculate AHvap of water at 298 K.

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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