**Problem 12: Calculation of Standard Reaction Enthalpy**Determine \( \Delta H^\circ_{rxn} \) for the following reaction using the given standard reaction enthalpies:\[ 4 \, \text{Fe}_3\text{O}_4(s) + \text{O}_2(g) \rightarrow 6 \, \text{Fe}_2\text{O}_3(g) \]**Given Reactions and Their Enthalpies:**1. \( 6 \, \text{Fe}(s) + 4 \, \text{O}_2(g) \rightarrow 2 \, \text{Fe}_3\text{O}_4(s) \) \( \Delta H^\circ_{rxn} = -1787 \, \text{kJ} \)2. \( 6 \, \text{Fe}_2\text{O}_3(s) \rightarrow 12 \, \text{Fe}(s) + 9 \, \text{O}_2(g) \) \( \Delta H^\circ_{rxn} = +3946 \, \text{kJ} \)**Options:**A. +2159 kJ B. −2159 kJ C. +372 kJ D. −372 kJ E. Cannot be determined**Analysis:**- To find \( \Delta H^\circ_{rxn} \), you need to manipulate the given reactions to match the target reaction.- Reverse and adjust the coefficients of the reactions as needed.- Apply Hess's Law accordingly to calculate the overall enthalpy change.Consider balancing and alignment of the reactions to properly deduce the enthalpy of the desired reaction.

The value of ∆H depends on Stoichiometry of the chemical reaction If a chemical equation is…

12. Use the standard reaction enthalpies given below to determine AH°rxn for the following reaction: 4 Fe;04(s) + 02(g) → 6 Fe,03(g) AHxn =? Given: 6 Fe(s) + 4 02(g) → 2 Fe;04(s) 6 Fe203(s) → 12 Fe(s) +9 02(g) = -1787 kJ = +3946 k] A. +2159 kJ В. -2159 kJ C. +372 kJ D. -372 kJ E. Cannot be determined

12. Use the standard reaction enthalpies given below to determine AH°rxn for the following reaction: 4 Fe;04(s) + 02(g) → 6 Fe,03(g) AHxn =? Given: 6 Fe(s) + 4 02(g) → 2 Fe;04(s) 6 Fe203(s) → 12 Fe(s) +9 02(g) = -1787 kJ = +3946 k] A. +2159 kJ В. -2159 kJ C. +372 kJ D. -372 kJ E. Cannot be determined

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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