### Calculating the Standard Enthalpy Change (ΔH°_rxn) for a Chemical ReactionIn this learning module, we will calculate the standard enthalpy change (ΔH°_rxn) for the following chemical reaction:\[ \text{SiO}_2(s) + 4\text{HCl}(g) \rightarrow \text{SiCl}_4(g) + 2\text{H}_2\text{O}(g) \]To begin, let's look at the given standard enthalpy of formation (ΔH°_f) values for the reactants and products involved in the reaction:- \( \Delta H^\circ_\text{f} [\text{SiO}_2(s)] = -910.9 \text{ kJ/mol} \)- \( \Delta H^\circ_\text{f} [\text{SiCl}_4(g)] = -657.0 \text{ kJ/mol} \)- \( \Delta H^\circ_\text{f} [\text{HCl}(g)] = -92.3 \text{ kJ/mol} \)- \( \Delta H^\circ_\text{f} [\text{H}_2\text{O}(g)] = -241.8 \text{ kJ/mol} \)#### Calculation:The standard enthalpy change of the reaction can be calculated using the formula:\[ \Delta H^\circ_\text{rxn} = \sum (\Delta H^\circ_\text{f, products}) - \sum (\Delta H^\circ_\text{f, reactants}) \]So, we need to sum up the enthalpies of formation for the products and subtract the sum of the enthalpies of formation for the reactants:\[ \Delta H^\circ_\text{rxn} = [\Delta H^\circ_\text{f} (\text{SiCl}_4(g)) + 2 \cdot \Delta H^\circ_\text{f} (\text{H}_2\text{O}(g))] - [\Delta H^\circ_\text{f} (\text{SiO}_2(s)) + 4 \cdot \Delta H^\circ_\text{f} (\text{HCl}(g))] \]Substitute the given values into the equation:\[ \Delta H

Products are present on right side of reaction and reactants are present on left side of reaction

Calculate the DH°rxn for the following reaction SiO₂(s) + 4HCI(g) ® SiCl4(g) + 2H₂O(g) Given that DH f [SiO₂(s)] = -910.9 kJ/mol; = -657.0 kJ/mol; DH°ƒ [SiCl4(9)] DH°f [HCI(g)] = -92.3 kJ/mol; DH°f [H₂O (9)] = -241.8 kJ/mol; Express your answer in decimal notation rounded to four significant figures.

Calculate the DH°rxn for the following reaction SiO₂(s) + 4HCI(g) ® SiCl4(g) + 2H₂O(g) Given that DH f [SiO₂(s)] = -910.9 kJ/mol; = -657.0 kJ/mol; DH°ƒ [SiCl4(9)] DH°f [HCI(g)] = -92.3 kJ/mol; DH°f [H₂O (9)] = -241.8 kJ/mol; Express your answer in decimal notation rounded to four significant figures.

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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