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3. Which substance has the higher entropy?  i) Pure alumina Al2O3 (s), OR ruby  ii) one mole of N2 (g) at 1 bar pressure OR one mole of N2 (g) at 10 bar pressure ( both at 298K) iii) dry ice ( solid CO2) at -78 degrees C OR CO2 (g) at 0 degrees C

3. Which substance has the higher entropy?  i) Pure alumina Al2O3 (s), OR ruby  ii) one mole of N2 (g) at 1 bar pressure OR one mole of N2 (g) at 10 bar pressure ( both at 298K) iii) dry ice ( solid CO2) at -78 degrees C OR CO2 (g) at 0 degrees C

Chemistry
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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I am having trouble understanding the following entropy questions, any guidence or help would be greatly appreciated :).

 

1. Will ΔS be positive or negative for the following process:

2 Cl2O7 (g) → 2 Cl2 (g) + 7 O2 (g)

2. What is the order for the following by increasing entropy

    • CO(g)
    • COCl2 (g)
    • CO2  (g)
    • CaO(s)


3. Which substance has the higher entropy? 

i) Pure alumina Al2O3 (s), OR ruby 


ii) one mole of N2 (g) at 1 bar pressure OR one mole of N2 (g) at 10 bar pressure ( both at 298K)


iii) dry ice ( solid CO2) at -78 degrees C OR CO2 (g) at 0 degrees C

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