Balance the ethanol combustion reaction shown below and use the bond energies to estimate the enthalpy change for the combustion of 2.07 moles of ethanol. C2H;OH(1) + O2(9) → CO2(9) + H»0(g) Table of bond enthalpies is in the Equation Sheet. ΔΗ kJ

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### Homework Assignment: Enthalpy Calculations

#### Question 2:

**Balance the ethanol combustion reaction shown below and use the bond energies to estimate the enthalpy change for the combustion of 2.07 moles of ethanol.**

\[ \text{C}_2\text{H}_5\text{OH}(l) + \text{O}_2(g) \rightarrow \text{CO}_2(g) + \text{H}_2\text{O}(g) \]

**Table of bond enthalpies is in the** Equation Sheet.

**ΔH**: 

\[ \_\_\_\_\_\_\_\_ \text{kJ} \]

**Instructions:**
1. Balance the chemical equation.
2. Write out the Lewis structure for each compound.
3. Account for each bond broken and each bond formed.

**Feedback:** 
Incorrect. After you balance the chemical equation, write out the Lewis structure for each compound. It is important to account for each bond broken and each bond formed. Also, keep in mind that the bond energies on the table refer to a whole mole of bond broken or formed.

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#### Question 3: Calculate the Enthalpy of the Photosynthesis Reaction

**Balance the reaction shown below that occurs during photosynthesis and use bond energies to estimate the enthalpy change for the reaction that produces 1.86 moles of glucose:**

\[ \text{CO}_2(g) + \text{H}_2\text{O}(g) \rightarrow \text{C}_6\text{H}_{12}\text{O}_6 + \text{O}_2(g) \]

**Table of bond enthalpies is in the** Equation Sheet. **Look up the structure for the ring form of glucose (not the linear form).**

**ΔH**: 

\[ \_\_\_\_\_\_\_\_ \text{kJ} \]

**Instructions:**
1. Balance the chemical equation.
2. Write out the Lewis structure for each compound.
3. Account for each bond broken and each bond formed.

**Feedback:** 
Incorrect. After you balance the chemical equation, write out the Lewis structure for each compound. It is important to account for each bond broken and each bond formed. Also, keep in mind that the bond energies on the table refer to a whole mole of bond broken or formed.

---

**Note:** For both questions, detailed
Transcribed Image Text:--- ### Homework Assignment: Enthalpy Calculations #### Question 2: **Balance the ethanol combustion reaction shown below and use the bond energies to estimate the enthalpy change for the combustion of 2.07 moles of ethanol.** \[ \text{C}_2\text{H}_5\text{OH}(l) + \text{O}_2(g) \rightarrow \text{CO}_2(g) + \text{H}_2\text{O}(g) \] **Table of bond enthalpies is in the** Equation Sheet. **ΔH**: \[ \_\_\_\_\_\_\_\_ \text{kJ} \] **Instructions:** 1. Balance the chemical equation. 2. Write out the Lewis structure for each compound. 3. Account for each bond broken and each bond formed. **Feedback:** Incorrect. After you balance the chemical equation, write out the Lewis structure for each compound. It is important to account for each bond broken and each bond formed. Also, keep in mind that the bond energies on the table refer to a whole mole of bond broken or formed. --- #### Question 3: Calculate the Enthalpy of the Photosynthesis Reaction **Balance the reaction shown below that occurs during photosynthesis and use bond energies to estimate the enthalpy change for the reaction that produces 1.86 moles of glucose:** \[ \text{CO}_2(g) + \text{H}_2\text{O}(g) \rightarrow \text{C}_6\text{H}_{12}\text{O}_6 + \text{O}_2(g) \] **Table of bond enthalpies is in the** Equation Sheet. **Look up the structure for the ring form of glucose (not the linear form).** **ΔH**: \[ \_\_\_\_\_\_\_\_ \text{kJ} \] **Instructions:** 1. Balance the chemical equation. 2. Write out the Lewis structure for each compound. 3. Account for each bond broken and each bond formed. **Feedback:** Incorrect. After you balance the chemical equation, write out the Lewis structure for each compound. It is important to account for each bond broken and each bond formed. Also, keep in mind that the bond energies on the table refer to a whole mole of bond broken or formed. --- **Note:** For both questions, detailed
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