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 entropyAS.Note: if you have not been given enough information to decide a sign, select the "unknown" option.reactionABCobservationsThis reaction is spontaneous only above-7. °℃ but proceeds at a faster rate above23. °C.This reaction is spontaneous except above-46. °C.This reaction is always spontaneous, butproceeds slower at temperatures below79. °C.ΔΗAS isAH isAS isconclusionsAH isAS isX✓ (pick one) ↑positivenegativeunknown(pick one)(pick one)(pick one)(pick one)S↑↑↑

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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 This reaction is spontaneous only above -7. °C but proceeds at a faster rate above 23. °C. This reaction is spontaneous except above -46. °C. This reaction is always spontaneous, but proceeds slower at temperatures below 79. °C. conclusions AH is ✓ (pick one) positive negative unknown (pick one) AS is AH is AS is AH is AS is X (pick one) (pick one) (pick one) Ś

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 This reaction is spontaneous only above -7. °C but proceeds at a faster rate above 23. °C. This reaction is spontaneous except above -46. °C. This reaction is always spontaneous, but proceeds slower at temperatures below 79. °C. conclusions AH is ✓ (pick one) positive negative unknown (pick one) AS is AH is AS is AH is AS is X (pick one) (pick one) (pick one) Ś

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 AH and reaction entropy A.S. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction 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 X (pick one) ✓ (pick one) (pick one) (pick one) (pick one) (pick one) Ś
1. For the reaction in which reactant A is converted to product B, tell whether this proves is favorable at (a) 4°C and (b) 37°C. H (kJ • mol) 54 SU.K. mol) 22 A B 60 43 2. For a given reaction, the value of AH is 15 kl-mol' and the value of AS is 51 J-Kmol. Above what temperature will this reaction be spontaneous?
MISSED THIS? Watch IWE: Standard Enthalpies of Formation; Read Section 7.9. You can click on the Review link to access the section in your eText. Consider the table of Standard Thermodynamic Quantities for Selected Substances at 25 °C. Substance AH; (kJ/mol) Substance AH; (kJ/mol) Substance AH; (kJ/mol) Al(g) HCl(aq) NF₂ (g) Al₂O₂ (s) Cr(g) NH:(E) F(g) C(g) CH₂(g) C₂H₂(g) C₂H₂(g) C₂H6(g) CO(g) CO₂ (g) Cl(g) HCl(g) 330.0 -1675.7 716.7 -74.6 227.4 52.4 -84.68 -110.5 -393.5 121.3 -92.3 HF(g) HF (aq) H(g) Fe(g) FeO(s) Fe₂O₂ (s) Fe₂O4(s) N(g) -167.2 396.6 79.38 -273.3 -335.0 218.0 416.3 -272.0 -824.2 -1118.4 472.7 NH3(aq) O(g) O₂(g) S(g) SO₂(g) SO3(g) Sn(g) SnO(s) SnO₂ (s) -132.1 -45.9 -80.29 249.2 142.7 277.2 -296.8 -395.7 301.2 -280.7 -577.6 Part A Enter an equation for the formation of HF(g) from its elements in their standard states. Express your answer as a chemical equation including phases. Part C ΑΣΦ 6 A chemical reaction does not occur for this question. Part B Complete previous…
Sublimation is an example of a process for which a. ΔH is negative and ΔS is positive at all temperatures. b. ΔH, ΔS, and ΔG are positive at all temperatures. c. ΔH and ΔS are positive at all temperatures. d. ΔH is positive and ΔS is negative at all temperatures. e. ΔH, ΔS, and ΔG are negative at all temperatures.
4. For the following reaction, 2PBS (s) + 30, (g) + 2PBO (s) + 2SO, (g) 134 Chapter 5 Scanned with CamScanner 1. Calculate AGO at 25°C, given the values of AHo = - 844 kJ/mol and -165 J/mol-K. AS° b. At what temperature does AGO become zero? Jf the reaction is not spontaneous under standard conditions at 25°C, at what temperature, if any, would the reaction become spontaneous? itul M %3! c.
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)
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)
4. A particular endothermic process results in an decrease in system entropy; therefore, the G value is _________ and the process is _____________. a. negative; spontaneous b. negative; nonspontaneous c. positive; spontaneous d. positive; nonspontaneous
eq M M IS M ots M M M # 3 E D Consider the reaction 2H₂O(l) 2H₂(g) + O₂(g) The standard free energy change for this reaction is 474.2 kJ. The free energy change when 1.88 moles of H₂O(1) react at standard condition is kJ. 20 C What is the maximum amount of useful work that the reaction of 1.88 moles of H₂O(l) is capable of producing in the surroundings under standard conditions? If no work can be done, enter none. kJ Submit Answer $ 4 R F > % 5 T [References] Use the References to access important values if needed for this question. Retry Entire Group 9 more group attempts remaining G Cengage Learning Cengage Technical Support 6 B MacBook Pro Y Topics] H & 7 N U J ▶II * 00 8 M I ( 9 K. O < 96 ) L P V t Previous Email Instructor Save and Exit { + 11 [ Next ? } 1 dele
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 slower below - 1. °C than above. This reaction is spontaneous only below -3. °C. The reaction is never spontaneous. AH is AS is conclusions AH is As is AH is AS is X ✓ (pick one) î positive negative unknown (pick one) (pick one) (pick one) (pick one) Ś ↑ î
1.) Complete A and B to move on. a.) Write the complete, balanced chemical equation for the following reaction on a separate sheet of paper. Provide products where they are not given. Assume that the reaction is spontaneous. Propane (C3H8) + oxygen → carbon dioxide + water Type the sum of the coefficients in the equation into the answer blank. If there is no coefficient, count it as one. Include ( g, s, l, or aq) b.) Write the complete, balanced chemical equation for the following reaction on a separate sheet of paper. Provide products where they are not given. Assume that the reaction is spontaneous. Diphosphorus pentoxide + water → Type in the coefficient and formula for the product in the equation that contains phosphorus. Include ( g, s, l, or aq)
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