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Which of the following sets of systems are in order of increasing entropy? AH,(8), HBrO,(8), HBr(g) B He (g), Ar(g), Ne (g) © He (8), Cl,(g). P,(8) DH,0(1), H,0(s), H,0 (s)

Which of the following sets of systems are in order of increasing entropy? AH,(8), HBrO,(8), HBr(g) B He (g), Ar(g), Ne (g) © He (8), Cl,(g). P,(8) DH,0(1), H,0(s), H,0 (s)

Chemistry: Principles and Practice
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter17: Chemcial Thermodynamics
Section: Chapter Questions
Problem 17.80QE
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Question 1 Which of the following sets of systems are in order of increasing entropy? H,(8), HBr0 (8), HBr(g) A В He (g), Ar(g), Ne (g) He (8), Cl,(g), P4(8) O H,0(1), H,0 (8), H¸0 (3) D Question 2 A reaction has A H° =100 kJ/mol and AS° =250 J/mol – K įndicating that it is nonspontaneous at room temperature. Under what temperature conditions will it become spontaneous? You will have to calculate AG°. A 410°K B 298°K 303° К 278°K Question 3 "Thermite" reactions have been used for welding metal parts, such as railway rails and in metal refining. One such thermite reaction is Fe,0,(s) + 2Al(s) → Al,0,(s) + 2Fe(s). During this reaction, the surroundings absorb 851.8 kJ/mol of heat, which indicates that this reaction is spontaneous at room temperature under standard conditions. A) True В False
Transcribed Image Text:Question 1 Which of the following sets of systems are in order of increasing entropy? H,(8), HBr0 (8), HBr(g) A В He (g), Ar(g), Ne (g) He (8), Cl,(g), P4(8) O H,0(1), H,0 (8), H¸0 (3) D Question 2 A reaction has A H° =100 kJ/mol and AS° =250 J/mol – K įndicating that it is nonspontaneous at room temperature. Under what temperature conditions will it become spontaneous? You will have to calculate AG°. A 410°K B 298°K 303° К 278°K Question 3 "Thermite" reactions have been used for welding metal parts, such as railway rails and in metal refining. One such thermite reaction is Fe,0,(s) + 2Al(s) → Al,0,(s) + 2Fe(s). During this reaction, the surroundings absorb 851.8 kJ/mol of heat, which indicates that this reaction is spontaneous at room temperature under standard conditions. A) True В False
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