Calculate the enthalpy change (in kJ/mol) for the combustion of CS2 (1) using the enthalpy values given in the table. CS2 (1) + 3 02 (g) → CO₂ (g) +2 SO2 (g) AH in kJ/mol -393.6 -296.8 +87.9 Reaction C(s) + O₂(g) →→ CO₂ (g) S (s) + O₂ (g) →→→→SO₂ (g) C(s) + 2S (s) →→→ CS2 (1) →>>>

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### Topic: Calculating the Enthalpy Change for Combustion

**Objective:**  
To calculate the enthalpy change (in kJ/mol) for the combustion of carbon disulfide (CS₂) using the enthalpy values provided.

---

**Combustion Reaction:**

\[ \text{CS}_2 (\ell) + 3\text{O}_2 (g) \rightarrow \text{CO}_2 (g) + 2\text{SO}_2 (g) \]

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**Enthalpy Values:**

| Reaction                                     | \( \Delta H \) in kJ/mol  |
|----------------------------------------------|---------------------------|
| \( \text{C} (s) + \text{O}_2 (g) \rightarrow \text{CO}_2 (g) \)       | \(-393.6\)                |
| \( \text{S} (s) + \text{O}_2 (g) \rightarrow \text{SO}_2 (g) \)       | \(-296.8\)                |
| \( \text{C} (s) + 2\text{S} (s) \rightarrow \text{CS}_2 (\ell) \)    | \(+87.9\)                 |

---

**Explanation:**

- The table lists three reactions and their associated enthalpy changes, \( \Delta H \).
- The first reaction involves carbon reacting with oxygen to form carbon dioxide, releasing \(393.6 \, \text{kJ/mol}\).
- The second reaction involves sulfur reacting with oxygen to form sulfur dioxide, releasing \(296.8 \, \text{kJ/mol}\).
- The third reaction shows the formation of carbon disulfide from its elements, with an associated enthalpy change of \(+87.9 \, \text{kJ/mol}\).

**Instructions:**

To find the enthalpy change for the combustion of CS₂, apply Hess's Law, which involves manipulating the given reactions to derive the target reaction, ensuring the \( \Delta H \) values align correctly.
Transcribed Image Text:### Topic: Calculating the Enthalpy Change for Combustion **Objective:** To calculate the enthalpy change (in kJ/mol) for the combustion of carbon disulfide (CS₂) using the enthalpy values provided. --- **Combustion Reaction:** \[ \text{CS}_2 (\ell) + 3\text{O}_2 (g) \rightarrow \text{CO}_2 (g) + 2\text{SO}_2 (g) \] --- **Enthalpy Values:** | Reaction | \( \Delta H \) in kJ/mol | |----------------------------------------------|---------------------------| | \( \text{C} (s) + \text{O}_2 (g) \rightarrow \text{CO}_2 (g) \) | \(-393.6\) | | \( \text{S} (s) + \text{O}_2 (g) \rightarrow \text{SO}_2 (g) \) | \(-296.8\) | | \( \text{C} (s) + 2\text{S} (s) \rightarrow \text{CS}_2 (\ell) \) | \(+87.9\) | --- **Explanation:** - The table lists three reactions and their associated enthalpy changes, \( \Delta H \). - The first reaction involves carbon reacting with oxygen to form carbon dioxide, releasing \(393.6 \, \text{kJ/mol}\). - The second reaction involves sulfur reacting with oxygen to form sulfur dioxide, releasing \(296.8 \, \text{kJ/mol}\). - The third reaction shows the formation of carbon disulfide from its elements, with an associated enthalpy change of \(+87.9 \, \text{kJ/mol}\). **Instructions:** To find the enthalpy change for the combustion of CS₂, apply Hess's Law, which involves manipulating the given reactions to derive the target reaction, ensuring the \( \Delta H \) values align correctly.
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