A reaction will be spontaneous only at low temperatures if both ? H and ? S...
A reaction will be spontaneous only at low temperatures if both
?
H and
?
S are negative. For a reaction in which
?
H = ?390.1 kJ/mol
and
?
S = ?96.00 J/K
·
mol,
determine the temperature
(in
°
C)
below which the reaction is spontaneous.
Homework Answers
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A reaction will be spontaneous only at low temperatures
if both
?
H and
?
S...
8. For the following reaction, CC2(s) + 2H2O(l) + Ca(OH)2(s) + C2H2(g) which is spontaneous at all temperatures, on...
8. For the following reaction, CC2(s) + 2H2O(l) + Ca(OH)2(s) + C2H2(g) which is spontaneous at all temperatures, one would predict that a. AG is positive for all temperatures. d. AH is - and AS is for the reaction. b. AH is + and AS is for the reaction. e. AH is + and AS' is- for the reaction. c. AH is - and AS is for the reaction. 9. Calculate the standard absolute entropy, in J/mol K. of Mg:...
5) a) At what temperatures is a reaction spontaneous if it has a deltaH0rxn = -88...
5) a) At what temperatures is a reaction spontaneous if it has a deltaH0rxn = -88 kJ/mol and a deltaS0rxn = -247 J/K mol. b) At what temperatures is a reaction spontaneous if it has a deltaH0rxn = -88 kJ/mol and a deltaS0rxn = +247 J/K mol. c) At what temperatures is a reaction spontaneous if it has a deltaH0rxn = +88 kJ/mol and a deltaS0rxn = -247 J/K mol. d) At what temperatures is a reaction spontaneous if it...
For a chemical reaction to be only spontaneous at low temperatures, which of the following conditions...
For a chemical reaction to be only spontaneous at low temperatures, which of the following conditions must be met? ∆S < 0, ∆H < 0 ∆S > 0, ∆H < 0 ∆S < 0, ∆H > 0 ∆S > 0, ∆H > 0
For the reaction H2(g) + S(s) --> H2S(g) delta H = -20.2 kJ mol-1 and delta...
For the reaction H2(g) + S(s) --> H2S(g) delta H = -20.2 kJ mol-1 and delta S =+43.1 J K-1mol-1. Which of the following statements is true? The reaction is spontaneous at all temperatures. delta G becomes less favorable as T is raised. The reaction is only spontaneous at high temps. The reaction is only spontaneous at low temps. The reaction is at equilibrium at 25 C under standardconditions. Please explain why too. Thank you, feedback will beawarded as soon...
For a given reaction, H = +35.5 kJ/mol and S = +83.6 J/Kmol. The reaction is...
For a given reaction, H = +35.5 kJ/mol and S = +83.6 J/Kmol. The reaction is spontaneous ________. Assume that H and S do not vary with temperature. at T < 425 K at T > 425 K at all temperatures at T > 298 K at T < 298 K
For the reaction: 2C4H10(g)+13O2(g)-->8CO2(g)+10H20(g) delta H is -125kJ/mol and delta S is 253 J/K*mol. This reaction...
For the reaction: 2C4H10(g)+13O2(g)-->8CO2(g)+10H20(g) delta H is -125kJ/mol and delta S is 253 J/K*mol. This reaction is_. a) spontaneous at all temperatures b) spontaneous only at high temperatures c) spontaneous only at low temperatures *I know the answer is A, but I need a detailed explanation as to why that is the correct answer.
For the reaction 2C4H10 (g) + 1302 (g) 8CO2 (g) + 10H20 (8) AHºis - 125...
For the reaction 2C4H10 (g) + 1302 (g) 8CO2 (g) + 10H20 (8) AHºis - 125 kJ/mol and AS is -253 J/K mol. This reaction is spontaneous at all temperatures spontaneous only at high temperature spontaneous only at low temperature nonspontaneous at all temperatures None of the above
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS...
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS <0, AG <0 (D) AH<0, AS > 0, AG>O (B) AH > 0, AS > 0, AG <0 (E) AH>0, AS <0, AG>0 (C) AH<0, AS <0, AG<0 5. For the reaction H, (g) +S (8) HS (g), AF- -20.2 kJ/mol and AS = +43.1 J/K mol. Which of these statements is true? (A) The reaction is only spontaneous at low temperatures. (B) The...
For the reaction 2C4H10 (g) + 1302 (8) — 8CO2 (g) + 10H20 (g) AH° is...
For the reaction 2C4H10 (g) + 1302 (8) — 8CO2 (g) + 10H20 (g) AH° is -125 kJ/mol and AS is -253 J/K mol. This reaction is spontaneous at all temperatures spontaneous only at high temperature © spontaneous only at low temperature nonspontaneous at all temperatures None of the above
At what temperature will a reaction be spontaneous? AH = +22.2 kJ/mol and AS = +81.1...
At what temperature will a reaction be spontaneous? AH = +22.2 kJ/mol and AS = +81.1 J/K-mol and assume both do not vary with temperature. at T > 298 K at all temperatures at T < 298 K at T < 274 K at T> 274 K
8. For the following reaction, CC2(s) + 2H2O(l) + Ca(OH)2(s) + C2H2(g) which is spontaneous at all temperatures, one would predict that a. AG is positive for all temperatures. d. AH is - and AS is for the reaction. b. AH is + and AS is for the reaction. e. AH is + and AS' is- for the reaction. c. AH is - and AS is for the reaction. 9. Calculate the standard absolute entropy, in J/mol K. of Mg:...
For the reaction 2C4H10 (g) + 1302 (g) 8CO2 (g) + 10H20 (8) AHºis - 125 kJ/mol and AS is -253 J/K mol. This reaction is spontaneous at all temperatures spontaneous only at high temperature spontaneous only at low temperature nonspontaneous at all temperatures None of the above
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS <0, AG <0 (D) AH<0, AS > 0, AG>O (B) AH > 0, AS > 0, AG <0 (E) AH>0, AS <0, AG>0 (C) AH<0, AS <0, AG<0 5. For the reaction H, (g) +S (8) HS (g), AF- -20.2 kJ/mol and AS = +43.1 J/K mol. Which of these statements is true? (A) The reaction is only spontaneous at low temperatures. (B) The...
For the reaction 2C4H10 (g) + 1302 (8) — 8CO2 (g) + 10H20 (g) AH° is -125 kJ/mol and AS is -253 J/K mol. This reaction is spontaneous at all temperatures spontaneous only at high temperature © spontaneous only at low temperature nonspontaneous at all temperatures None of the above
At what temperature will a reaction be spontaneous? AH = +22.2 kJ/mol and AS = +81.1 J/K-mol and assume both do not vary with temperature. at T > 298 K at all temperatures at T < 298 K at T < 274 K at T> 274 K
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