Using the conditions of spontancity to deduce the signs of AH. Zulema Use the observations about eadch 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 conclusions This reaction is spontaneous except below 142. °C but proceeds at a slower rate ΔΗ is (pick one) V A below 200, °C. AS is (pick one) V AH is This reaction is always spontaneous, but proceeds slower at temperatures above - 33. °C. (pick one) v B AS is (pick one) v AH is (pick one) v This reaction is exothermic. AS is (pick one) V

Using the conditions of spontancity to deduce the signs of AH. Zulema Use the observations about eadch 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 conclusions This reaction is spontaneous except below 142. °C but proceeds at a slower rate ΔΗ is (pick one) V A below 200, °C. AS is (pick one) V AH is This reaction is always spontaneous, but proceeds slower at temperatures above - 33. °C. (pick one) v B AS is (pick one) v AH is (pick one) v This reaction is exothermic. AS is (pick one) V

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
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 conclusions ΔΗ is (pick one) v Crystallization of a pure compound is A spontaneous only below -6. °C. AS is |(pick one) v ΔΗ is |(pick one) ♥ This reaction is endothermic and proceeds В faster at temperatures above 83. °C. AS is |(pick one) ♥ The reverse of this reaction is always spontaneous but proceeds slower at ΔΗ is |(pick one) ♥ C temperatures below 145. °C. AS is |(pick one) ♥ ?
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A certain chemical reaction has a negative value for Δ????. What must be true? The reverse chemical reaction is spontaneous The reaction takes place reversibly The chemical reaction is spontaneous The reaction takes place irreversible Please explain, to my understanding when entropy of the universe is (-) it is equal to zero. I must be missing something or it's not clicking to what I have learned.
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 conclusions AH is (pick one) The reverse of this reaction is always spontaneous but proceeds faster at A temperatures above 25. °C. AS is (pick one) v This reaction is spontaneous except below AH is (pick one) 63. °C but proceeds at a faster rate above 117. °C. AS is (pick one) v AH iS This reaction is always spontaneous, but proceeds faster at temperatures above (pick one) v C 115. °C. AS is (pick one)
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 always spontaneous, but proceeds faster at temperatures below 140. °C. The reaction is never spontaneous. This reaction is spontaneous only above 129. °C but proceeds at a slower rate below 192. °C. AH is AS is conclusions AH is AS is AH is AS is X ✓ (pick one) positive negative unknown (pick one) î (pick one) (pick one) C Ś ↑ (pick one) î
For the following thermodynamic equilibrium chemical reaction shown below determine the overall ΔH° of the reaction first and then determine if it i sendothermic, exothermic, or neither. Next determine the overall S° of the reaction then decide if the entropy (disorder) is increasing, decreasing, or no change . Next determine the Gibbs free energy ΔG° of the reaction at 1234.56°C and determine if the reaction is spontaneous, non-spontaneous, or at equilibrium. Finally calculate the equilibrium constant (K) for the reaction and determine if the equilibrium will shift to left, right, or is at equilibrium.
Calculate the reaction enthalpy for the decomposition of hydrogen peroxide, 2H2O20 H26) + O26) 2H2) + O216 2H2O0 + O26 from the following data: H2O20; AH°RXN = -187.8 kJ - 2H2O0; AH°Rxn = -571.6 kJ
Use the observations about each chemical reaction in the table below to decide the sign (positive or negative) of the reaction enthalpy ▴ 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 The reverse of this reaction is always spontaneous. This reaction is spontaneous except above 64. °C. This reaction is always spontaneous, but proceeds faster at temperatures below 77. °C. 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)
Using the values of AH and AS for the reactants and products from the tables, determine the values for AHon and AS for the reaction below and then use these values to calculate the AGº for the reaction at 25°C. Explain whether this reaction is spontaneous as written. C₂H5OH (1) → CH,CHO (g) + Hz) What would be the value of AGO for the reaction at 1125°C? Explain whether this reaction is spontaneous as written at this temperature.
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 conclusions AH is A This reaction is always spontaneous, but proceeds slower at temperatures below 45. °C. AS is ΔΗ is This reaction is spontaneous only above 150. °C but proceeds at a faster rate above 180. °C. AS is ΔΗ is This reaction is exothermic and proceeds slower at temperatures below 67. °C. AS is X C (pick one) (pick one) (pick one) (pick one) ✓ (pick one) (pick one) Ś ?
Calculate ∆G° for the reaction of iron(III) oxide with carbon monoxide to give elemental iron and carbon dioxide.Use data in the table below: