Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
Related questions
Question
For which of the following reactions, if any, if ΔS ° positive?

Transcribed Image Text:The image presents three chemical equations, each showcasing different types of reactions:
(a) **Phase Change of Water**:
- \( \text{H}_2\text{O} (\text{g}) \rightarrow \text{H}_2\text{O} (\text{l}) \)
- This equation describes the phase transition of water from gas (g) to liquid (l), indicating a condensation process.
(b) **Haber Process**:
- \( \text{N}_2 (\text{g}) + 3\text{H}_2 (\text{g}) \rightarrow 2\text{NH}_3 (\text{g}) \)
- This reaction illustrates the synthesis of ammonia (\(\text{NH}_3\)) from nitrogen (\(\text{N}_2\)) and hydrogen (\(\text{H}_2\)) gases. It is the basic chemical equation for the Haber process, which is used industrially for ammonia production.
(c) **Formation of Calcium Carbonate**:
- \( \text{CaO} (\text{s}) + \text{CO}_2 (\text{g}) \rightarrow \text{CaCO}_3 (\text{s}) \)
- This equation represents the formation of calcium carbonate (\(\text{CaCO}_3\)), a solid, from calcium oxide (\(\text{CaO}\)) solid and carbon dioxide (\(\text{CO}_2\)) gas. This type of reaction is typical in the production of limestone and has applications in construction and manufacturing.
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We have to tell the reactions for which ∆S° is positive.
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