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 above35. °C.The reverse of this reaction is alwaysspontaneous but proceeds faster attemperatures above 132. "C.This reaction is slower below 63. °C thanabove.conclusionsAll isAS isAll isAS isAl isAS is(pick one)(pick one)(pick one)(pickone)(pick one)(pick one)

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AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction A C observations This reaction is spontaneous only above 35. C. The reverse of this reaction is always spontaneous but proceeds faster at temperatures above 132. "C. table below to decide the sign (positive or negative) of the reaction enthalpy Mar This reaction is slower below 63. °C than above. conclusions All is AS is All is AS is All is A (pick one) (pick one) (pick one) (pick one) (pick one)

AS. Note: if you have not been given enough information to decide a sign, select the "unknown" option. reaction A C observations This reaction is spontaneous only above 35. C. The reverse of this reaction is always spontaneous but proceeds faster at temperatures above 132. "C. table below to decide the sign (positive or negative) of the reaction enthalpy Mar This reaction is slower below 63. °C than above. conclusions All is AS is All is AS is All is A (pick one) (pick one) (pick one) (pick one) (pick one)

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter10: Entropy And The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 10.50PAE: For the reaction NO(g)+NO2(g)N2O3(g) , use tabulated thermodynamic data to calculate H and S. Then...

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For the reaction NO(g)+NO2(g)N2O3(g) , use tabulated thermodynamic data to calculate H and S. Then use those values to answer the following questions. (a) Is this reaction spontaneous at 25°C? Explain your answer. (b) If the reaction is not spontaneous at 25°C, will it become spontaneous at higher temperatures or lower temperatures? (c) To show that your prediction is accurate, choose a temperature that corresponds to your prediction in part (b) and calculate G . (Assume that both enthalpy and entropy are independent of temperature.)
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