Consider a reaction that has a negative ΔH and a positive ΔS. Which of the following statements is TRUE?
This reaction will be spontaneous only at low temperatures.
This reaction will be nonspontaneous at all temperatures.
This reaction will be spontaneous at all temperatures.
This reaction will be spontaneous only at high temperatures.
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Consider a reaction that has a negative ΔH and a positive ΔS. Which of the following...
Consider a reaction that has a positive ΔH and a negative ΔS. Which of the following statements is TRUE? This reaction will be spontaneous only at high temperatures. This reaction will be nonspontaneous at all temperatures. This reaction will be nonspontaneous only at high temperatures. This reaction will be spontaneous at all temperatures.
Consider a reaction that has a negative ΔH and a negative ΔS. Which of the following statements is TRUE? A)This reaction will be spontaneous only at high temperatures. B)This reaction will be nonspontaneous at all temperatures. C)This reaction will be nonspontaneous only at high temperatures. D)This reaction will be spontaneous at all temperatures. E) It is not possible to determine without more information.
Consider a reaction that has a positive ΔH and a positive ΔS. Which of the following statements is TRUE? A)This reaction will be nonspontaneous only at high temperatures. B)This reaction will be nonspontaneous at all temperatures. C)This reaction will be spontaneous at all temperatures. D)This reaction will be spontaneous only at high temperatures. E)It is not possible to determine without more information.
Consider a reaction that has a negative ΔH and a negative ΔS. Which of the following statements is TRUE? A)This reaction will be nonspontaneous only at low temperatures. B)This reaction will be spontaneous only at low temperatures. C)This reaction will be spontaneous at all temperatures. D)This reaction will be nonspontaneous at all temperatures. E)It is not possible to determine without more information.
Consider a reaction that has a positive AH and a negative As. Which of the following statements is TRUE? a. This reaction will be spontaneous only at high temperatures. b. This reaction will be spontaneous at all temperatures. c. This reaction will be nonspontaneous at all temperatures. d. This reaction will be nonspontaneous only at high temperatures. e. It is not possible to determine without more information.
Consider a reaction for which ΔH = 6.03 kJ/mol; ΔS = 22.1 J/K-mol. Which of the following statements is true? a. The reaction becomes spontaneous at high temperatures above 273 K b. The reaction becomes spontaneous at low temperatures below 273 K c. The reaction is spontaneous at all temperatures d. The reaction is never spontaneous
For a process, ΔS is positive and ΔH is negative. This process: Select one: a. is spontaneous at very high temperatures b. is spontaneous at all temperatures c. is not spontaneous at any temperature d. is at equilibrium e. is spontaneous at very low temperatures
A certain reaction has positive values for both ΔH and ΔS. Therefore, the reaction a. can be spontaneous if the temperature is low enough. b. Cannot be spontaneous at any temperature. c. must be spontaneous at all temperatures. d. can be spontaneous if the temperature is high enough. e. has a positive free energy at any temperature.
A reaction has a ΔH°= 204.6 kJ and a ΔS°= -19.5 J/K. a. Given the sign and magnitude of ΔH and ΔS, will the reaction be spontaneous at all temperatures, nonspontaneous at all temperatures? Briefly explain your reasoning. b. Calculate the standard free energy change for the reaction at 298 K. c. Is the reaction spontaneous or nonspontaneous at 298 K?
What combinations of positive or negative ΔH and positive or negative ΔS can indicate a spontaneous reaction? Choose one or more:–ΔH, –ΔS+ΔH, –ΔS–ΔH, +ΔS+ΔH, +ΔS