reaction A B C observations This reaction is always spontaneous, but proceeds faster at temperatures below 121. °C. Crystallization of a pure compound is spontaneous only below 109. °C. This reaction is exothermic and proceeds faster at temperatures above 34. °C. conclusions AH is AS is AH is AS is AH is AS is (pick one) (pick one) (pick one) (pick one) (pick one) (pick one)
reaction A B C observations This reaction is always spontaneous, but proceeds faster at temperatures below 121. °C. Crystallization of a pure compound is spontaneous only below 109. °C. This reaction is exothermic and proceeds faster at temperatures above 34. °C. conclusions AH is AS is AH is AS is AH is AS is (pick one) (pick one) (pick one) (pick one) (pick one) (pick one)
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...
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![Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy ΔH and reaction entropy ΔS.
Note: if you have not been given enough information to decide a sign, select the "unknown" option.
| reaction | observations | conclusions |
|----------|----------------------------------------------------------------------------------------------|----------------------|
| A | This reaction is always spontaneous, but proceeds faster at temperatures below 121°C. | ΔH is (pick one) |
| | | ΔS is (pick one) |
| B | Crystallization of a pure compound is spontaneous only below 109°C. | ΔH is (pick one) |
| | | ΔS is (pick one) |
| C | This reaction is exothermic and proceeds faster at temperatures above 34°C. | ΔH is (pick one) |
| | | ΔS is (pick one) |
**Explanation:**
- The table provides observations and requires conclusions about the signs of ΔH (enthalpy change) and ΔS (entropy change) based on given temperature information and spontaneity of reactions.
- For each reaction, an explanation is not given, and the appropriate choice must be selected from an unspecified list.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcf266520-407e-4b51-839c-e1d92d759be6%2Fc00da383-d3ec-453b-9c84-51ef61c5474c%2F21lsbwq_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy ΔH and reaction entropy ΔS.
Note: if you have not been given enough information to decide a sign, select the "unknown" option.
| reaction | observations | conclusions |
|----------|----------------------------------------------------------------------------------------------|----------------------|
| A | This reaction is always spontaneous, but proceeds faster at temperatures below 121°C. | ΔH is (pick one) |
| | | ΔS is (pick one) |
| B | Crystallization of a pure compound is spontaneous only below 109°C. | ΔH is (pick one) |
| | | ΔS is (pick one) |
| C | This reaction is exothermic and proceeds faster at temperatures above 34°C. | ΔH is (pick one) |
| | | ΔS is (pick one) |
**Explanation:**
- The table provides observations and requires conclusions about the signs of ΔH (enthalpy change) and ΔS (entropy change) based on given temperature information and spontaneity of reactions.
- For each reaction, an explanation is not given, and the appropriate choice must be selected from an unspecified list.
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