Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations cd (pick one) positive negative ΔΗ is ✓ unknown A This reaction is spontaneous only below 23. °C. AS is unknown ΔΗ is B This reaction is endothermic and proceeds slower at temperatures below 133. °C. positive AS is negative C This reaction is spontaneous except below 95. °C but proceeds at a faster rate above ΔΗ is negative 155. °C. AS is positive ☑
Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy AH and reaction entropy AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction observations cd (pick one) positive negative ΔΗ is ✓ unknown A This reaction is spontaneous only below 23. °C. AS is unknown ΔΗ is B This reaction is endothermic and proceeds slower at temperatures below 133. °C. positive AS is negative C This reaction is spontaneous except below 95. °C but proceeds at a faster rate above ΔΗ is negative 155. °C. AS is positive ☑
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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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 AH and reaction entropy
AS.
Note: if you have not been given enough information to decide a sign, select the "unknown" option.
reaction
observations
cd
(pick one)
positive
negative
ΔΗ is
✓ unknown
A
This reaction is spontaneous only below
23. °C.
AS is
unknown
ΔΗ is
B
This reaction is endothermic and proceeds
slower at temperatures below 133. °C.
positive
AS is
negative
C
This reaction is spontaneous except below
95. °C but proceeds at a faster rate above
ΔΗ is
negative
155. °C.
AS is
positive
☑
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