**Calculate the Standard Enthalpy Change for the Reaction****Reaction:**\[ 2A + B \rightarrow 2C + 2D \]The heats of formation are given in the following table:| Substance | $ \Delta H^\circ_f $ (kJ/mol) ||-----------|-----------------------------|| A | -239 || B | -383 || C | 185 || D | -507 |**Instruction:**Express your answer in kilojoules.**Explanation:**To find the standard enthalpy change ($ \Delta H^\circ_{\text{reaction}} $) for the reaction, use the formula:\[ \Delta H^\circ_{\text{reaction}} = \sum \Delta H^\circ_f (\text{products}) - \sum \Delta H^\circ_f (\text{reactants}) \]**Detailed Steps:**1. Calculate the total $ \Delta H^\circ_f $ for the products: - $ 2 \times \Delta H^\circ_f (C) + 2 \times \Delta H^\circ_f (D) $ - $ 2 \times 185 + 2 \times (-507) $2. Calculate the total $ \Delta H^\circ_f $ for the reactants: - $ 2 \times \Delta H^\circ_f (A) + 1 \times \Delta H^\circ_f (B) $ - $ 2 \times (-239) + (-383) $3. Plug these values into the formula and solve for $ \Delta H^\circ_{\text{reaction}} $.This method will yield the standard enthalpy change in kilojoules.

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Calculate the standard enthalpy change for the reaction 2A +B= 2C+2D where the heats of formation are given in the following table: ΔΗ |(kJ/mol) Substance A -239 В -383 C 185 D -507 Express your answer in kilojoules.

Calculate the standard enthalpy change for the reaction 2A +B= 2C+2D where the heats of formation are given in the following table: ΔΗ |(kJ/mol) Substance A -239 В -383 C 185 D -507 Express your answer in kilojoules.

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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