Initial Knowledge Check 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 A B C observations This reaction is exothermic. The reverse of this reaction is always spontaneous but proceeds slower at temperatures below 121. °C. This reaction is always spontaneous, but proceeds faster at temperatures below -14. °C. ΔΗ IS AS is ΔΗ IS AS is conclusions AH is AS IS X (pick one) ✓ (pick one) (pick one) (pick one) ✓ (pick one) ✓ (pick one) Question 12 S Kara V olo A

Initial Knowledge Check 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 A B C observations This reaction is exothermic. The reverse of this reaction is always spontaneous but proceeds slower at temperatures below 121. °C. This reaction is always spontaneous, but proceeds faster at temperatures below -14. °C. ΔΗ IS AS is ΔΗ IS AS is conclusions AH is AS IS X (pick one) ✓ (pick one) (pick one) (pick one) ✓ (pick one) ✓ (pick one) Question 12 S Kara V olo A

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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Attempt 1 Consider the. reaction: H2(g) + CO(g) ® CH2O(g) Determine AG°, at 25°C using the following information: rxn AH° %3D rxn +1.9 kJ and AS°rxn = -109.6 J/K Write your answer in the first box. Mind your units and significant digits. In the second box, write whether the reaction is spontaneous or non-spontaneoL Page 32 of Previous Page Next Page
QUESTION 32 What values of reaction enthalpy and entropy would indicate that a reaction is spontaneous at all temperatures? Ο ΔΗ 0: ΔS 0, AS >0
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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 AH and reaction entropy A.S. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction A B C observations The reverse of this reaction is always spontaneous but proceeds slower at temperatures below -26. °C. This reaction is spontaneous except above -42. °℃. This reaction is endothermic. AH is AS is conclusions AH is AS is AH is AS is X (pick one) (pick one) (pick one) (pick one) (pick one) (pick one)
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For the reaction CO2(g) + H2(g)-→CO(g) + H,0(g) AH° = 41.2 kJ and AS° = 42.1 J/K At standard conditions, this reaction would be product favored at relatively high temperatures. at no temperature. O at relatively low temperatures. O at all temperatures. Submit Answer Try Another Version 2 item attempts remaining
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