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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![**Using the Standard Enthalpies of Formation:**
**Problem Statement:**
Using the standard enthalpies of formation, what is the standard enthalpy of reaction?
**Chemical Reaction:**
CO(g) + H₂O(g) ⟶ CO₂(g) + H₂(g)
**Equation to Complete:**
ΔH°ᵣₓₙ = [input box] kJ
**Explanation:**
This problem involves calculating the standard enthalpy change (ΔH°ᵣₓₙ) for the given reaction using the standard enthalpies of formation of the compounds involved.
The standard enthalpy of reaction can be calculated using the formula:
\[ \Delta H°ᵣₓₙ = \sum \Delta H°_f (\text{products}) - \sum \Delta H°_f (\text{reactants}) \]
Each term in the formula represents the standard enthalpy of formation (ΔH°_f) of the substances, which are typically determined experimentally and provided in tables.
To complete this calculation, the standard enthalpies of formation for CO(g), H₂O(g), CO₂(g), and H₂(g) must be obtained from a reference source. The values should then be substituted into the formula to calculate the ΔH°ᵣₓₙ, expressed in kilojoules (kJ).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffdc195bb-9009-47db-866e-65b6514806e8%2F40ab7efc-68c1-4fc4-b3d2-f6515e55b61d%2Fpbt2mw7_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Using the Standard Enthalpies of Formation:**
**Problem Statement:**
Using the standard enthalpies of formation, what is the standard enthalpy of reaction?
**Chemical Reaction:**
CO(g) + H₂O(g) ⟶ CO₂(g) + H₂(g)
**Equation to Complete:**
ΔH°ᵣₓₙ = [input box] kJ
**Explanation:**
This problem involves calculating the standard enthalpy change (ΔH°ᵣₓₙ) for the given reaction using the standard enthalpies of formation of the compounds involved.
The standard enthalpy of reaction can be calculated using the formula:
\[ \Delta H°ᵣₓₙ = \sum \Delta H°_f (\text{products}) - \sum \Delta H°_f (\text{reactants}) \]
Each term in the formula represents the standard enthalpy of formation (ΔH°_f) of the substances, which are typically determined experimentally and provided in tables.
To complete this calculation, the standard enthalpies of formation for CO(g), H₂O(g), CO₂(g), and H₂(g) must be obtained from a reference source. The values should then be substituted into the formula to calculate the ΔH°ᵣₓₙ, expressed in kilojoules (kJ).
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