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.
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, 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 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 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 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 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 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.
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 (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
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