AH°f of HCl (g) is kJ/mol.

Chemistry
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**Problem 2: Calculating the Enthalpy of Formation**

**Given Data:**

The table below provides the standard enthalpy of formation (ΔH°f) for various substances involved in the reaction.

| Substance   | ΔH°f (kJ/mol) |
|-------------|---------------|
| SO₂ (g)     | -297          |
| SO₃ (g)     | -396          |
| SO₂Cl₂ (g)  | -364          |
| H₂SO₄ (l)   | -814          |
| H₂O (l)     | -286          |

**Reaction:**

\[ \text{SO}_2\text{Cl}_2(g) + 2\text{H}_2\text{O}(l) \rightarrow \text{H}_2\text{SO}_4(l) + 2\text{HCl}(g) \]

**ΔH°rxn:**  
\[ \Delta H°_{\text{rxn}} = -62 \text{ kJ} \]

**Objective:**

Calculate the standard enthalpy of formation (ΔH°f) of HCl (g) and select the correct answer from the options below.

**Options:**

A. -184 kJ/mol  
B. +60 kJ/mol  
C. -92 kJ/mol  
D. +30 kJ/mol  
E. +184 kJ/mol

The task involves using the given reaction enthalpy and individual enthalpies of formation to determine the unknown enthalpy of formation for HCl gas.
Transcribed Image Text:**Problem 2: Calculating the Enthalpy of Formation** **Given Data:** The table below provides the standard enthalpy of formation (ΔH°f) for various substances involved in the reaction. | Substance | ΔH°f (kJ/mol) | |-------------|---------------| | SO₂ (g) | -297 | | SO₃ (g) | -396 | | SO₂Cl₂ (g) | -364 | | H₂SO₄ (l) | -814 | | H₂O (l) | -286 | **Reaction:** \[ \text{SO}_2\text{Cl}_2(g) + 2\text{H}_2\text{O}(l) \rightarrow \text{H}_2\text{SO}_4(l) + 2\text{HCl}(g) \] **ΔH°rxn:** \[ \Delta H°_{\text{rxn}} = -62 \text{ kJ} \] **Objective:** Calculate the standard enthalpy of formation (ΔH°f) of HCl (g) and select the correct answer from the options below. **Options:** A. -184 kJ/mol B. +60 kJ/mol C. -92 kJ/mol D. +30 kJ/mol E. +184 kJ/mol The task involves using the given reaction enthalpy and individual enthalpies of formation to determine the unknown enthalpy of formation for HCl gas.
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