**Question 1: Entropy and Chemical Processes**Which response includes all the following processes that are accompanied by an increase in entropy?1. \( \text{2SO}_3(g) + \text{O}_2(g) \rightarrow \text{SO}_3(g) \)2. \( \text{H}_2\text{O (l)} \rightarrow \text{H}_2\text{O (s)} \)3. \( \text{Br}_2(l) \rightarrow \text{Br}_2(g) \)4. \( \text{H}_2\text{O (l)} \rightarrow \text{H}_2\text{O (g)} + \frac{1}{2}\text{O}_2(g) \)Select one:- a. 1, 4- b. 3, 4- c. 1, 2- d. 1, 2, 3, and 4- e. 2, 3, 4**Question 2: Molar Entropy of Vaporization**Ethanol has a normal boiling point of 352 K, and its \( \Delta H_{\text{vap}} \) is 38.6 kJ/mol. Calculate the molar entropy of vaporization (\( \Delta S_{\text{vap}} \)).Select one:- a. 89.0 J/K·mol- b. 1.36 x 10^4 J/K·mol- c. 1.10 x 10^2 J/K·mol- d. 9.12 J/K·mol- e. 1.09 x 10^4 J/K·mol

The change in entropy of a reaction is given by the difference of number of gaseous molecules in product side and reactant side.1) Write the reaction. 2 SO2(g) + O2(g)→SO2(g) ∆S=(number of molecules on product )-(number of molecules on reactant) Substitute 1 for number of molecules for product and 3 for number of molecules of reactant. ∆S=(number of molecules on product )-(number of molecules on reactant) =1-3 =-2 As ∆S is negative, the entropy is decreasing. 2) Write the reaction. H2O(l)→H2O(s) As the water changes from liquid to solid, the entropy decreases. 3)Write the reaction. Br2(l)→Br2(g) As the water changes from liquid to gas, the entropy increases. 4) Write the reaction. H2O(l) →H2O(l) +12O2(g) ∆S = 1/2 As ∆S is positive, the entropy increases. Therefore, the correct answer is option (b). Write the expression for ∆S. ∆S=∆HvapT Substitute 38.6 kJ/mol for ∆Hvap and 352 K for T to calculate ∆S. ∆S=38.6 kJ/mol352 K =0.109 kJ.mol-1.K-1 =1.09×10-4 J/mol.K Therefore, the correct answer is option (e).

Science

Chemistry

Which response includes all the following processes that are accompahled by Increase in entropy? (8Os +(8F0 + (8)osz 2. H;O() H;O(s) 3. Bry(1) Br:(g) 4. H;O;(1)→ H;0) + (1/2)0:(g) Select one: O a. 1,4 O b. 3,4 O. 1,2 O d. 1,2,3,and 4 O e. 2,3,4 Ethanol has a normal boiling point of 352 K. and its AHvap is 38.6 kj/mol. Calculate the molar entropy of vaporikation (ASvap) Select one: a. 89.0 VK-mol b. 1.36 x 10 /K-mol c. 1.10 x 10 J/K-mol d. 9.12 J/K mol e. 1.09 x 104 J/K-mol

Which response includes all the following processes that are accompahled by Increase in entropy? (8Os +(8F0 + (8)osz 2. H;O() H;O(s) 3. Bry(1) Br:(g) 4. H;O;(1)→ H;0) + (1/2)0:(g) Select one: O a. 1,4 O b. 3,4 O. 1,2 O d. 1,2,3,and 4 O e. 2,3,4 Ethanol has a normal boiling point of 352 K. and its AHvap is 38.6 kj/mol. Calculate the molar entropy of vaporikation (ASvap) Select one: a. 89.0 VK-mol b. 1.36 x 10 /K-mol c. 1.10 x 10 J/K-mol d. 9.12 J/K mol e. 1.09 x 104 J/K-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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