Answered: Note: approximate values of AH are…

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...

See similar textbooks

Related questions

Concept explainers

Question

$**Reaction Coordinate Analysis: Identifying Endothermic Reactions** This educational section aims to help you identify which reaction coordinate corresponds to an endothermic reaction based on the given diagrams. **Understanding the Diagrams:** Each diagram represents a potential energy profile (reaction coordinate) of a chemical reaction. The y-axis denotes the enthalpy (H), and the x-axis represents the reaction coordinate (rxn coord). Enthalpy change ($\Delta H$) is crucial here: - **Diagram A:** - The curve starts at a lower energy level, rises to a peak, and then drops to an intermediate level. - $\Delta H > 0$ is indicated, signifying an increase in enthalpy. - **Diagram B:** - Similar to Diagram A, begins at a lower energy level, reaches a higher peak before descending. - $\Delta H > 0$, indicating a net gain in energy. - **Diagram C:** - Starts at a higher energy level, peaks, then declines to a lower energy level. - $\Delta H < 0$, suggesting a decrease in enthalpy. - **Diagram D:** - Starts at a comparable level to Diagram C, peaks, and then falls below the starting energy level. - $\Delta H < 0$ is indicated, representing a reduction in enthalpy. **Key Concept:** - **Endothermic Reactions**: These reactions absorb energy from the surroundings, resulting in an increase in enthalpy ($\Delta H > 0$). **Conclusion:** Diagrams A and B both show an increase in enthalpy, with $\Delta H > 0$, indicating they represent endothermic reactions.$

Transcribed Image Text:**Reaction Coordinate Analysis: Identifying Endothermic Reactions** This educational section aims to help you identify which reaction coordinate corresponds to an endothermic reaction based on the given diagrams. **Understanding the Diagrams:** Each diagram represents a potential energy profile (reaction coordinate) of a chemical reaction. The y-axis denotes the enthalpy (H), and the x-axis represents the reaction coordinate (rxn coord). Enthalpy change ($\Delta H$) is crucial here: - **Diagram A:** - The curve starts at a lower energy level, rises to a peak, and then drops to an intermediate level. - $\Delta H > 0$ is indicated, signifying an increase in enthalpy. - **Diagram B:** - Similar to Diagram A, begins at a lower energy level, reaches a higher peak before descending. - $\Delta H > 0$, indicating a net gain in energy. - **Diagram C:** - Starts at a higher energy level, peaks, then declines to a lower energy level. - $\Delta H < 0$, suggesting a decrease in enthalpy. - **Diagram D:** - Starts at a comparable level to Diagram C, peaks, and then falls below the starting energy level. - $\Delta H < 0$ is indicated, representing a reduction in enthalpy. **Key Concept:** - **Endothermic Reactions**: These reactions absorb energy from the surroundings, resulting in an increase in enthalpy ($\Delta H > 0$). **Conclusion:** Diagrams A and B both show an increase in enthalpy, with $\Delta H > 0$, indicating they represent endothermic reactions.

Expert Solution

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions