Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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![**Chemical Reaction Energy Change Exploration**
A chemist measures the energy change \( \Delta H \) during the following reaction:
\[
\text{Cl}_2(g) + \text{H}_2(g) \rightarrow 2\text{HCl}(g) \quad \Delta H = -184 \text{ kJ}
\]
Use the information to answer the following questions.
1. **This reaction is...**
- [ ] endothermic.
- [ ] exothermic.
2. **Suppose 46.7 g of \( \text{Cl}_2 \) react. Will any heat be released or absorbed?**
- [ ] Yes, absorbed.
- [ ] Yes, released.
- [ ] No.
3. **If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed.**
\[ \_\_\_\_ \text{ kJ} \]
Be sure your answer has the correct number of significant digits.
**Diagram Explanation:**
There is a small box with a toggle labeled ×10, used for calculations potentially involving multiplication by 10.](https://content.bartleby.com/qna-images/question/df160487-cd07-498e-ac49-eb7d4eed62da/1161d96e-4512-437b-95b2-d0d3b9a3ccb8/h7obj1_processed.png)
Transcribed Image Text:**Chemical Reaction Energy Change Exploration**
A chemist measures the energy change \( \Delta H \) during the following reaction:
\[
\text{Cl}_2(g) + \text{H}_2(g) \rightarrow 2\text{HCl}(g) \quad \Delta H = -184 \text{ kJ}
\]
Use the information to answer the following questions.
1. **This reaction is...**
- [ ] endothermic.
- [ ] exothermic.
2. **Suppose 46.7 g of \( \text{Cl}_2 \) react. Will any heat be released or absorbed?**
- [ ] Yes, absorbed.
- [ ] Yes, released.
- [ ] No.
3. **If you said heat will be released or absorbed in the second part of this question, calculate how much heat will be released or absorbed.**
\[ \_\_\_\_ \text{ kJ} \]
Be sure your answer has the correct number of significant digits.
**Diagram Explanation:**
There is a small box with a toggle labeled ×10, used for calculations potentially involving multiplication by 10.
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