What is the change in enthalpy in kilojoules when 2.30 mol of Mg is completely reacted according to the following reaction Mg(s) + O2(g) → MgO(s) AH = -1204 kJ
What is the change in enthalpy in kilojoules when 2.30 mol of Mg is completely reacted according to the following reaction Mg(s) + O2(g) → MgO(s) AH = -1204 kJ
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...
Related questions
Question
100%
Look at image below
![**Question 15 of 15**
**Topic: Thermodynamics - Enthalpy Change in Reactions**
**Problem Statement:**
Calculate the change in enthalpy (in kilojoules) when 2.30 moles of magnesium (Mg) react completely according to the following reaction:
\[ 2 \text{Mg(s)} + \text{O}_2\text{(g)} \rightarrow 2 \text{MgO(s)} \]
The enthalpy change (\( \Delta H \)) for the reaction is given as \(-1204 \text{ kJ}\).
**Calculation Steps:**
1. **Starting Amount:** Input the amount of Mg reacting (2.30 mol) into the left box labeled "STARTING AMOUNT."
2. **Use the Reaction Stoichiometry:**
- The balanced chemical equation shows that 2 moles of Mg produce an enthalpy change of \(-1204 \text{ kJ}\).
3. **Calculate the Enthalpy Change for 2.30 mol of Mg:**
- Input the appropriate values into the provided equation format:
\[
\text{Enthalpy Change} = \left( \frac{\text{Starting Amount (moles)}}{\text{Stoichiometric Coefficient (moles)}} \right) \times \Delta H_{\text{reaction}}
\]
- Here:
- Starting Amount = 2.30 mol
- Stoichiometric Coefficient = 2 mol
- \(\Delta H_{\text{reaction}} = -1204 \text{ kJ}\)
4. **Compute the Enthalpy Change:**
- Use the provided calculation tools to find the final enthalpy change.
**Interface:**
- A calculation field and result display panel are included for user input and solving.
- Below the calculation interface are options to adjust factors and reset the input.
**Additional Resources:**
- Click on the provided link for more learning materials about enthalpy and thermodynamics.
This problem helps deepen understanding of reaction enthalpy changes, particularly in calculating real-world chemical energy changes from stoichiometric ratios.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F743e1204-284e-4787-9cb1-b6fdc93e0afd%2F6ec6b9dd-28b0-4bea-ad27-98a2b713c577%2F6n9039v_processed.png&w=3840&q=75)
Transcribed Image Text:**Question 15 of 15**
**Topic: Thermodynamics - Enthalpy Change in Reactions**
**Problem Statement:**
Calculate the change in enthalpy (in kilojoules) when 2.30 moles of magnesium (Mg) react completely according to the following reaction:
\[ 2 \text{Mg(s)} + \text{O}_2\text{(g)} \rightarrow 2 \text{MgO(s)} \]
The enthalpy change (\( \Delta H \)) for the reaction is given as \(-1204 \text{ kJ}\).
**Calculation Steps:**
1. **Starting Amount:** Input the amount of Mg reacting (2.30 mol) into the left box labeled "STARTING AMOUNT."
2. **Use the Reaction Stoichiometry:**
- The balanced chemical equation shows that 2 moles of Mg produce an enthalpy change of \(-1204 \text{ kJ}\).
3. **Calculate the Enthalpy Change for 2.30 mol of Mg:**
- Input the appropriate values into the provided equation format:
\[
\text{Enthalpy Change} = \left( \frac{\text{Starting Amount (moles)}}{\text{Stoichiometric Coefficient (moles)}} \right) \times \Delta H_{\text{reaction}}
\]
- Here:
- Starting Amount = 2.30 mol
- Stoichiometric Coefficient = 2 mol
- \(\Delta H_{\text{reaction}} = -1204 \text{ kJ}\)
4. **Compute the Enthalpy Change:**
- Use the provided calculation tools to find the final enthalpy change.
**Interface:**
- A calculation field and result display panel are included for user input and solving.
- Below the calculation interface are options to adjust factors and reset the input.
**Additional Resources:**
- Click on the provided link for more learning materials about enthalpy and thermodynamics.
This problem helps deepen understanding of reaction enthalpy changes, particularly in calculating real-world chemical energy changes from stoichiometric ratios.
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps

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.Recommended textbooks for you

Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning

Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education

Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning

Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning

Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education

Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning

Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education

Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning

Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY