### Calculation of Reaction Enthalpy Change**Introduction:**The reusable booster rockets of the space shuttle employ a combination of aluminum and ammonium perchlorate as fuel. One of the potential chemical reactions taking place is described by the equation: \[ 3 \text{Al}(s) + 3 \text{NH}_4 \text{ClO}_4 (s) \rightarrow \text{Al}_2 \text{O}_3 (s) + \text{AlCl}_3 (s) + 3 \text{NO}(g) + 6 \text{H}_2 \text{O}(g) \]Our objective is to calculate the standard enthalpy change (**∆H°**) for this reaction.**Table of Standard Enthalpies of Formation:**\[\begin{array}{|c|c|c|}\hline\text{Substance and State} & \Delta H_f^\circ \, (\text{kJ/mol}) \\\hline\text{Al}(s) & 0 \\\text{Al}_2\text{O}_3(s) & -1676 \\\text{AlCl}_3(s) & -704 \\\text{H}_2\text{O}(g) & -242 \\\text{NO}(g) & 90 \\\text{NH}_4\text{ClO}_4(s) & -295 \\\hline\end{array}\]**Calculation:**The standard enthalpy change of the reaction (**∆H°**) can be calculated using the enthalpies of formation for the reactants and products:\[ \Delta H^{\circ}_{\text{reaction}} = \sum \Delta H_f^\circ(\text{products}) - \sum \Delta H_f^\circ(\text{reactants}) \]**Please fill in:**\[ \Delta H^{\circ} = \boxed{\phantom{ }} \text{ kJ} \]**Diagram Explanation:**There is a table provided showing the standard enthalpies of formation (\( \Delta H_f^\circ \)) for the substances involved in the reaction. Each row lists a substance along with its standard enthalpy of formation in kilojoules per mole (kJ/mol). By substituting these values into the formula above

The change in enthalpy of a reaction is calculated by using the following formula

The reusable booster rockets of the space shuttle use a mixture of aluminum and ammonium perchlorate as fuel. A possible reaction is 3Al(s) + 3NH₂C1O4 (s) → Al₂O3 (s) + AlCl3 (s) + 3NO(g) + 6H₂O(g) Calculate AH° for this reaction. Substance and State AH (kJ/mol) Al(s) 0 Al2O3(s) AlCl3 (s) H₂O(g) NO(g) NH4ClO4(s) AH° = kj -1676 -704 -242 90. -295

The reusable booster rockets of the space shuttle use a mixture of aluminum and ammonium perchlorate as fuel. A possible reaction is 3Al(s) + 3NH₂C1O4 (s) → Al₂O3 (s) + AlCl3 (s) + 3NO(g) + 6H₂O(g) Calculate AH° for this reaction. Substance and State AH (kJ/mol) Al(s) 0 Al2O3(s) AlCl3 (s) H₂O(g) NO(g) NH4ClO4(s) AH° = kj -1676 -704 -242 90. -295

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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