a. Calculate the enthalpy of reaction for: 2 CO(g) + O2(g) → 2 CO2(g) b. If 18.5 grams of carbon dioxide are produced, what is the change in energy in kJ?

Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter5: Principles Of Chemical Reactivity: Energy And Chemical Reactions
Section5.8: Product- Or Reactant-favored Reactions And Thermodynamics
Problem 2.2ACP
icon
Related questions
icon
Concept explainers
Question
### Calculating the Enthalpy of Reaction

**a. Calculate the enthalpy of reaction for:**

\[ 2 \text{CO}(g) + \text{O}_2(g) \rightarrow 2 \text{CO}_2(g) \]

**b. If 18.5 grams of carbon dioxide are produced, what is the change in energy in kJ?**

---

**Explanation:**

To solve part (a), you will need the standard enthalpies of formation for the reactants and products involved in the reaction. The enthalpy change for the reaction \(\Delta H_{reaction}\) can be calculated using Hess's Law:

\[ \Delta H_{reaction} = \Sigma \Delta H_f \text{(products)} - \Sigma \Delta H_f \text{(reactants)} \]

For part (b), use the enthalpy change per mole from part (a) to calculate the energy change for 18.5 grams of \(\text{CO}_2\). First, convert the mass of \(\text{CO}_2\) to moles:

\[ \text{Molar Mass of } \text{CO}_2 = 44.01 \text{ g/mol} \]
\[ \text{Moles of } \text{CO}_2 = \frac{18.5 \text{ g}}{44.01 \text{ g/mol}} \]

Then, multiply the moles by the enthalpy change per mole obtained in part (a) to find the total energy change in kJ.
Transcribed Image Text:### Calculating the Enthalpy of Reaction **a. Calculate the enthalpy of reaction for:** \[ 2 \text{CO}(g) + \text{O}_2(g) \rightarrow 2 \text{CO}_2(g) \] **b. If 18.5 grams of carbon dioxide are produced, what is the change in energy in kJ?** --- **Explanation:** To solve part (a), you will need the standard enthalpies of formation for the reactants and products involved in the reaction. The enthalpy change for the reaction \(\Delta H_{reaction}\) can be calculated using Hess's Law: \[ \Delta H_{reaction} = \Sigma \Delta H_f \text{(products)} - \Sigma \Delta H_f \text{(reactants)} \] For part (b), use the enthalpy change per mole from part (a) to calculate the energy change for 18.5 grams of \(\text{CO}_2\). First, convert the mass of \(\text{CO}_2\) to moles: \[ \text{Molar Mass of } \text{CO}_2 = 44.01 \text{ g/mol} \] \[ \text{Moles of } \text{CO}_2 = \frac{18.5 \text{ g}}{44.01 \text{ g/mol}} \] Then, multiply the moles by the enthalpy change per mole obtained in part (a) to find the total energy change in kJ.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Thermochemistry
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
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781337399074
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
Principles of Modern Chemistry
Principles of Modern Chemistry
Chemistry
ISBN:
9781305079113
Author:
David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:
Cengage Learning
Chemistry: The Molecular Science
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781133949640
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
Chemistry: Principles and Practice
Chemistry: Principles and Practice
Chemistry
ISBN:
9780534420123
Author:
Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:
Cengage Learning
General Chemistry - Standalone book (MindTap Cour…
General Chemistry - Standalone book (MindTap Cour…
Chemistry
ISBN:
9781305580343
Author:
Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:
Cengage Learning