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11 Nov 2019
Which combination of factors favors spontaneity? a. Endothermic reactions and an increase in disorder favor spontaneity. b. Exothermic reactions and an increase in order favor spontaneity. c. Exothermic reactions and an increase in disorder favor spontaneity. d. Endothermic reactions and an increase in order favor spontaneity. If a substance can exist in all three states of matter, rank entropy from smallest (least) to largest (greatest) a. gas O: Delta S O: Delta S > O d. Delta H O For the reaction: C_5H_12(l) + 8 O_2 (g) rightarrow 5 CO_2(g) + 6 H_2O(l) Delta H = -715.3 KJ per mole of reaction. What is the value of Delta H for the formation of 0.350 moles of CO_2(g)? a. -615.3 KJ b. -408.7 KJ c. -86.4 KJ d. -50.1 KJ For the reaction: MnO_2(s) + 2H_2(g) rightarrow Mn(s) + 2H_2O(g) Delta H degree = 8.90 K cal Delta S degree = 23 cal/K At what temperature (in degree C) will this system be in equilibrium? a. 228 degree C b. 114 degree C c. -114 degree C d. 387 degree C Is the oxidation of carbon monoxide to carbon dioxide spontaneous at 25 degree C? 2 CO(g) + O_2(g) rightarrow 2 CO_2(g) a. yes: Delta G degree = -568 KJ/mole rxn b. yes: Delta G degree = -514 KJ/mole rxn c. yes: Delta G degree = -452 KJ/mole rxn d. yes: Delta G degree +368 KJ/mole rxn
Which combination of factors favors spontaneity? a. Endothermic reactions and an increase in disorder favor spontaneity. b. Exothermic reactions and an increase in order favor spontaneity. c. Exothermic reactions and an increase in disorder favor spontaneity. d. Endothermic reactions and an increase in order favor spontaneity. If a substance can exist in all three states of matter, rank entropy from smallest (least) to largest (greatest) a. gas O: Delta S O: Delta S > O d. Delta H O For the reaction: C_5H_12(l) + 8 O_2 (g) rightarrow 5 CO_2(g) + 6 H_2O(l) Delta H = -715.3 KJ per mole of reaction. What is the value of Delta H for the formation of 0.350 moles of CO_2(g)? a. -615.3 KJ b. -408.7 KJ c. -86.4 KJ d. -50.1 KJ For the reaction: MnO_2(s) + 2H_2(g) rightarrow Mn(s) + 2H_2O(g) Delta H degree = 8.90 K cal Delta S degree = 23 cal/K At what temperature (in degree C) will this system be in equilibrium? a. 228 degree C b. 114 degree C c. -114 degree C d. 387 degree C Is the oxidation of carbon monoxide to carbon dioxide spontaneous at 25 degree C? 2 CO(g) + O_2(g) rightarrow 2 CO_2(g) a. yes: Delta G degree = -568 KJ/mole rxn b. yes: Delta G degree = -514 KJ/mole rxn c. yes: Delta G degree = -452 KJ/mole rxn d. yes: Delta G degree +368 KJ/mole rxn
Jamar FerryLv2
10 May 2019