Chemistry
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ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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![**Problem 2: Determining Reaction Enthalpy**
To find the enthalpy for the reaction:
\[ \text{5C(s)} + \text{6H}_2(g) \rightarrow \text{C}_5\text{H}_{12}(l) \]
Use the following reactions and their enthalpies:
1. \(\text{C}_5\text{H}_{12}(l) + 8\text{O}_2(g) \rightarrow 5\text{CO}_2(g) + 6\text{H}_2\text{O}(g)\), \(\Delta H_{\text{rxn}} = -3244.8 \, \text{kJ}\)
2. \(\text{C}(s) + \text{O}_2(g) \rightarrow \text{CO}_2(g)\), \(\Delta H_{\text{rxn}} = -393.5 \, \text{kJ}\)
3. \(2\text{H}_2(g) + \text{O}_2(g) \rightarrow 2\text{H}_2\text{O}(g)\), \(\Delta H_{\text{rxn}} = -483.5 \, \text{kJ}\)
**Solution Instructions:**
To calculate the enthalpy of the target reaction, you need to manipulate these given reactions, ensuring you balance and reverse equations as necessary to align with the target reaction steps. This involves considering the stoichiometry and potentially reversing reactions (which changes the sign of \(\Delta H\)) to achieve the desired result.](https://content.bartleby.com/qna-images/question/e4623fc6-165c-41ee-ad2c-ab19e78f0a44/e2b91b4f-1dfe-4b74-abcd-b50bdfb92e67/0xsm6je_processed.png)
Transcribed Image Text:**Problem 2: Determining Reaction Enthalpy**
To find the enthalpy for the reaction:
\[ \text{5C(s)} + \text{6H}_2(g) \rightarrow \text{C}_5\text{H}_{12}(l) \]
Use the following reactions and their enthalpies:
1. \(\text{C}_5\text{H}_{12}(l) + 8\text{O}_2(g) \rightarrow 5\text{CO}_2(g) + 6\text{H}_2\text{O}(g)\), \(\Delta H_{\text{rxn}} = -3244.8 \, \text{kJ}\)
2. \(\text{C}(s) + \text{O}_2(g) \rightarrow \text{CO}_2(g)\), \(\Delta H_{\text{rxn}} = -393.5 \, \text{kJ}\)
3. \(2\text{H}_2(g) + \text{O}_2(g) \rightarrow 2\text{H}_2\text{O}(g)\), \(\Delta H_{\text{rxn}} = -483.5 \, \text{kJ}\)
**Solution Instructions:**
To calculate the enthalpy of the target reaction, you need to manipulate these given reactions, ensuring you balance and reverse equations as necessary to align with the target reaction steps. This involves considering the stoichiometry and potentially reversing reactions (which changes the sign of \(\Delta H\)) to achieve the desired result.
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