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The scenes below represent the reaction of X2Y2 to yield X2 (red) and Y2 (blue). (a) What is the sign of AS for the reaction? (b) If the reaction is spontaneous only above 325°C, what is the sign of AH? * (a)AS > 0.; (b) The problem says the reaction is spontaneous (AG < 0) only above 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0. (a)AS > 0.; (b) The problem says the reaction is non-spontaneous (AG < 0) only above 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0. (a)AS < 0.; (b) The problem says the reaction is spontaneous (AG < 0) only above O 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0. (a)AS < 0.; (b) The problem says the reaction is non-spontaneous (AG < 0) only above O 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0.

The scenes below represent the reaction of X2Y2 to yield X2 (red) and Y2 (blue). (a) What is the sign of AS for the reaction? (b) If the reaction is spontaneous only above 325°C, what is the sign of AH? * (a)AS > 0.; (b) The problem says the reaction is spontaneous (AG < 0) only above 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0. (a)AS > 0.; (b) The problem says the reaction is non-spontaneous (AG < 0) only above 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0. (a)AS < 0.; (b) The problem says the reaction is spontaneous (AG < 0) only above O 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0. (a)AS < 0.; (b) The problem says the reaction is non-spontaneous (AG < 0) only above O 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0.

Chemistry
Chemistry
9th Edition
ISBN:9781133611097
Author:Steven S. Zumdahl
Publisher:Steven S. Zumdahl
Chapter17: Spontaneity, Entropy, And Free Energy
Section: Chapter Questions
Problem 7RQ: If you calculate a value for G for a reaction using the values of Gf in Appendix 4 and get a...
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The scenes below represent the reaction of X2Y2 to yield X2 (red) and Y2 (blue). (a) What is the sign of AS for the reaction? (b) If the reaction is spontaneous only above 325°C, what is the sign of AH? * (a)AS > 0.; (b) The problem says the reaction is spontaneous (AG < 0) only above 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0. (a)AS > 0.; (b) The problem says the reaction is non-spontaneous (AG < 0) only above 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0. (a)AS < 0.; (b) The problem says the reaction is spontaneous (AG < 0) only above O 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0. (a)AS < 0.; (b) The problem says the reaction is non-spontaneous (AG < 0) only above O 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0.
Transcribed Image Text:The scenes below represent the reaction of X2Y2 to yield X2 (red) and Y2 (blue). (a) What is the sign of AS for the reaction? (b) If the reaction is spontaneous only above 325°C, what is the sign of AH? * (a)AS > 0.; (b) The problem says the reaction is spontaneous (AG < 0) only above 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0. (a)AS > 0.; (b) The problem says the reaction is non-spontaneous (AG < 0) only above 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0. (a)AS < 0.; (b) The problem says the reaction is spontaneous (AG < 0) only above O 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0. (a)AS < 0.; (b) The problem says the reaction is non-spontaneous (AG < 0) only above O 325°C, which implies high T. If AS > 0, -TAS < 0, so AG will become negative at higher T only if AH > 0.
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