For the following combustion reaction CH3COCH3(1) + 402(g) ->>> 3CO2(g) + 3H₂O(g) AH = -1.79 × 10³ kJ When a 22.1-g sample of acetone (molar mass = 58.08 g/mol) is burned, how much energy (in kJ) is released as heat?

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**Combustion Reaction of Acetone**

For the following combustion reaction:
\[ \text{CH}_3\text{COCH}_3(l) + 4\text{O}_2(g) \rightarrow 3\text{CO}_2(g) + 3\text{H}_2\text{O}(g) \]
\[ \Delta H = -1.79 \times 10^3 \text{ kJ} \]

**Problem:**

When a 22.1-g sample of acetone (molar mass = 58.08 g/mol) is burned, how much energy (in kJ) is released as heat?

**Solution:**

To find the energy released, follow these steps:

1. **Calculate the number of moles of acetone:**
   \[
   \text{Number of moles} = \frac{\text{mass}}{\text{molar mass}} = \frac{22.1 \text{ g}}{58.08 \text{ g/mol}}
   \]

2. **Relate moles of acetone to energy released:**
   \[
   \text{Energy released} = \text{Number of moles} \times \Delta H
   \]

By performing these calculations, you can determine the amount of energy released when the specified amount of acetone is burned.
Transcribed Image Text:**Combustion Reaction of Acetone** For the following combustion reaction: \[ \text{CH}_3\text{COCH}_3(l) + 4\text{O}_2(g) \rightarrow 3\text{CO}_2(g) + 3\text{H}_2\text{O}(g) \] \[ \Delta H = -1.79 \times 10^3 \text{ kJ} \] **Problem:** When a 22.1-g sample of acetone (molar mass = 58.08 g/mol) is burned, how much energy (in kJ) is released as heat? **Solution:** To find the energy released, follow these steps: 1. **Calculate the number of moles of acetone:** \[ \text{Number of moles} = \frac{\text{mass}}{\text{molar mass}} = \frac{22.1 \text{ g}}{58.08 \text{ g/mol}} \] 2. **Relate moles of acetone to energy released:** \[ \text{Energy released} = \text{Number of moles} \times \Delta H \] By performing these calculations, you can determine the amount of energy released when the specified amount of acetone is burned.
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