(a) In a chemical reaction an explosion occurs. Would you expect AS to be positive, negative, or close to zero for this reaction? AS for this reaction should ---Select-- --Select-- be positive be negative be close to zero (b) In which of the processes described below should the entropy increase? Choose all of the correct possibilities. O ice cubes melting at -5 °C and 1 atm pressure O formation of ice cubes in an ice-cube tray in a freezer O the reaction of nitrogen atoms to form N₂ molecules at 25 °C and 1 atm dissolution of sugar in a hot cup of coffee O formation solid rust (iron(III) oxide) by oxygen in the air reacting with the iron in an old boat

(a) In a chemical reaction an explosion occurs. Would you expect AS to be positive, negative, or close to zero for this reaction? AS for this reaction should ---Select-- --Select-- be positive be negative be close to zero (b) In which of the processes described below should the entropy increase? Choose all of the correct possibilities. O ice cubes melting at -5 °C and 1 atm pressure O formation of ice cubes in an ice-cube tray in a freezer O the reaction of nitrogen atoms to form N₂ molecules at 25 °C and 1 atm dissolution of sugar in a hot cup of coffee O formation solid rust (iron(III) oxide) by oxygen in the air reacting with the iron in an old boat

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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7. The decomposition of ammonium chloride to form ammonia and hydrogen chloride occurs NH,Cl→ NH3(e + HCle AH = 176 kJ according to the following reaction: a) Predict the sign of the entropy change, AS, for this reaction. Justify your answer. b) The value of AG° for the reaction is negative at high temperatures but positive at low temperatures. Explain.
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