1-Which of the following processes are spontaneous? (Select all that apply.) ave
ID: 974515 • Letter: 1
Question
1-Which of the following processes are spontaneous? (Select all that apply.)
average car prices increasinga satellite falling to Earthwater decomposing to H2 and O2 at 298 K and 1 atma soft-boiled egg becoming raw
2.–/3 points
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positivenegative
(b) perfume vapors diffusing through a room
positivenegative
(c) alcohol evaporating
positivenegative
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positivenegative
positivenegative
positivenegative
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Br2(g)Br2(l)
BaCl2(s)CaF2(s)
5.–/4.5 points
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6.–/6 points
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My NotesFor the gaseous reaction of carbon monoxide and chlorine to form phosgene, (COCl2), calculate each of the following.
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8.–/5 points
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9.–/6 points
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10.–/4 points
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11.–/4 points
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At what temperature does the decomposition of solid N2O5 to NO2(g) and O2(g) become spontaneous at standard state coditions?
above 286 Kbelow 271 K above 271 Kbelow 286 K
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My Notes
A key step in the metabolism of glucose for energy is the isomerization of glucose-6-phosphate (G6P) to fructose-6-phosphate (F6P) as shown below.
At 298 K, the equilibrium constant for the isomerization is 0.510.
Question Part Points Submissions UsedExplanation / Answer
Please post only one question at a time. I will answer your last question.
(a) G° = -RTlnK = -(8.31442 J/K-mol) (298 K) ln(0.510) = 1668 J/mol
(b) G = G° + RTlnQ = (1668 J/mol) + (8.31442 J/K-mol) (298 K) ln(18.0) = 8829 J/mol. Since G is positive, the reaction reverts back to product (as the reaction is written).
(c) G = G° + RTlnQ = (1668 J/mol) + (8.31442 J/K-mol) (298 K) ln(0.1) = -4037 J/mol. Since G is negative, the reaction goes backward towards reactants.
(d) G = G° + RTlnQ;
-3500 J/mol = (1668 J/mol) + (8.31442 J/K-mol) (298 K) lnQ;
Q = 0.124. Since Q<K, then the reaction proceeds as written.
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