Which of the following should have the largest value of S degree? a) SF_6 (g) at

Question

Which of the following should have the largest value of S degree? a) SF_6 (g) at 298K b) H_2O (l) at 298K c) He(g) at 298K d) CH_3OH (l) at 298K Which of these changes in the distribution of the nine particles shows an decrease in entropy? Which of these statements is true for this reaction? FeO(s) + CO(g) rightarrow CO_2(g) + Fe(s) Delta H = -11.0 kJ; Delta S = -17.4 J/K a) The reaction is spontaneous only at low temperatures. b) The reaction is spontaneous only at high temperatures. c) The reaction is never spontaneous. d) The reaction is spontaneous at all temperatures.

Explanation / Answer

1. SF6 (g) has 291.5J/mole-K

Gases have entropy than liquids and solids

2. B

disorder is decreases entropy is decreases.

3. deltaH = -ve and deltaS = -ve spontaneous at low temperature

a. The reaction spontanoues at only low temperature

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