Question at position 28 Predict the signs of ∆G, ∆H, and ∆S for the spontaneous combustion of octane. C8H14(l) + 23 O2(g) → 16 CO2(g) + 14 H2O(g) ∆G < 0, ∆H > 0, ∆S > 0 ∆G < 0, ∆H < 0, ∆S > 0 ∆G > 0, ∆H > 0, ∆S < 0 ∆G < 0, ∆H < 0, ∆S < 0 ∆G > 0, ∆H > 0, ∆S > 0单项选择题

A

∆G < 0, ∆H > 0, ∆S > 0

B

∆G < 0, ∆H < 0, ∆S > 0

C

∆G > 0, ∆H > 0, ∆S < 0

D

∆G < 0, ∆H < 0, ∆S < 0

E

∆G > 0, ∆H > 0, ∆S > 0

登录即可查看完整答案

我们收录了全球超50000道真实原题与详细解析,现在登录,立即获得答案。

类似问题

Question at position 10 In 1774 Joseph Priestly prepared the element oxygen by heating mercury(II) oxide 2HgO(s) → 2Hg(l) + O2 (g) For this reaction ΔH° = 90.84 kJ and ΔS° = 108 J/K. In what temperature range is this reaction spontaneous? temperatures above 568 °C the reaction is not spontaneous in any temperature range the reaction is spontaneous at all temperaturestemperatures below 568 °C

Question at position 29 The value of ∆H° = –416 kJ and the value of ∆S° = –209 J/K for the reaction: P4O10(s) +  6H2O(l) →  4H3PO4(s) Calculate ∆G° for this reaction at 15 °C. –413 kJ2720 kJ–476 kJ–356 kJ

Question at position 28 A reaction proceeds toward equilibrium. At a certain point in the reaction, the concentrations of reactants and products are such that ΔG = ΔG°. What conclusion can reasonably be drawn about the reaction at this time? Q = 1K > QK = QK = 1K < Q

Question at position 26 The equilibrium constant for a reaction is 0.48 at 25 ºC. What is the value of ΔGº (kJ/mol) at this temperature? –4.2 kJ/mol 4.2 kJ/mol1.5 x 102 kJ/mol1.8 kJ/molMore information is needed

更多留学生实用工具

加入我们，立即解锁 海量真题 与 独家解析，让复习快人一步！