Calculate the heat of reaction AH for the following reaction: 2 HCl(g) + Br₂(g) → 2 HBr(g) + Cl₂(g) You can find a table of bond energies by using the Data button on the ALEKS toolbar. Round your answer to the nearest kJ/mol. kJ x 5 ? mol
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
![**Calculate the Heat of Reaction (ΔH) for the Following Reaction:**
\[2 \text{HCl}(g) + \text{Br}_2(g) \rightarrow 2 \text{HBr}(g) + \text{Cl}_2(g)\]
To perform this calculation, you will need to use bond energy values, which can be found by accessing the **Data** button on the ALEKS toolbar.
**Instructions:**
1. Look up the bond energies using the **Data** button.
2. Calculate the total bond energy of the reactants.
3. Calculate the total bond energy of the products.
4. Use the formula:
\[\Delta H = \sum \text{Bond energies of reactants} - \sum \text{Bond energies of products}\]
5. Round your answer to the nearest kJ/mol.
**Answer Format:**
\[ \text{kJ/mol} \]
**Input Box:**
- A rectangular input box where the rounded value of ΔH in kJ/mol should be entered.
**Additional Tools:**
- **Check Button (X):** To verify or reset your answer.
- **Refresh Button (↻):** To restart the calculation process.
- **Help Button (?):** For additional assistance or hints.
**Explanation of Symbols and Tools:**
- The **X Button** might be used to cancel or clear the input.
- The **Refresh Button** is typically used to reset the calculation process to its initial state.
- The **Help Button** provides additional information or guidance on how to proceed with the calculation.
Make sure to follow the steps correctly to determine the heat of reaction accurately.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2869f911-fc69-4f3e-bbf4-69a25f43f41f%2F0d6160dc-b022-47e2-b6f6-6c8b2551836f%2Fpwpet39_processed.jpeg&w=3840&q=75)
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