(Q66). What is the change in entropy (in J/K) when 14.1 g of liquid hexane boils at its normalboiling point? (The molecular formula of hexane is C6H₁4, its normal boiling point is 68.9°C, and itsenthalpy of vaporization at its boiling point is 28.85 kJ/mol). (Q67) What is the entropy change (in J/K) in the universe (AS universe) that occurs when nitrogen andoxygen gas combine to form dinitrogen monoxide gas at 25°C?2 N₂ (g) + O₂ (g) --> 2 N₂O (g)The enthalpy change for the reaction (AHrxn) is 163.2 kJ and the entropy change for the reaction(ASrxn) is -148.4 J/K.

∆Suniverse = ∆Ssystem + ∆Ssurrounding . And ∆Ssurrounding = - ∆Hreaction / T.

(Q66). What is the change in entropy (in J/K) when 14.1 g of liquid hexane boils at its normal boiling point? (The molecular formula of hexane is C6H₁4, its normal boiling point is 68.9°C, and its enthalpy of vaporization at its boiling point is 28.85 kJ/mol).

(Q66). What is the change in entropy (in J/K) when 14.1 g of liquid hexane boils at its normal boiling point? (The molecular formula of hexane is C6H₁4, its normal boiling point is 68.9°C, and its enthalpy of vaporization at its boiling point is 28.85 kJ/mol).

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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Question

(Q66). What is the change in entropy (in J/K) when 14.1 g of liquid hexane boils at its normal
boiling point? (The molecular formula of hexane is C6H₁4, its normal boiling point is 68.9°C, and its
enthalpy of vaporization at its boiling point is 28.85 kJ/mol).

(Q67) What is the entropy change (in J/K) in the universe (AS universe) that occurs when nitrogen and
oxygen gas combine to form dinitrogen monoxide gas at 25°C?
2 N₂ (g) + O₂ (g) --> 2 N₂O (g)
The enthalpy change for the reaction (AHrxn) is 163.2 kJ and the entropy change for the reaction
(ASrxn) is -148.4 J/K.

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