6. If for a spontaneous generic process A→B,  ΔG > ΔH, then for this process___________ Group of answer choices A, ΔS<0 if ΔH>0 and ΔS>0 if ΔH<0 b, ΔS<0, always c, ΔS=0 d, ΔS>0 if ΔH>0 and ΔS<0 if ΔH<0 e, ΔS>0, always   7.Consider a generic reaction AB (g) → A (g) +B (g) for which ΔH° is -150 kJ/mol and ΔS° is -150 J/K ∙ mol. This reaction is ________ Group of answer choices A, spontaneous at only at low temperatures B.spontaneous only at high temperatures C. nonspontaneous at all temperatures D. spontaneous at all temperature

For a particular reaction, AH° = 67.7 kJ and AS° = 126.9 J/K. Assuming these values change very little with temperature, at what temperature does the reaction change from nonspontaneous to spontaneous? T = K Is the reaction in the forward direction spontaneous at temperatures greater than or less than the calculated temperature? less than greater than

Which of the following processes have a ΔS > 0? Group of answer choices CH4(g) + H2O(g) → CO(g) + 3 H2(g) CH3OH(l) → CH3OH(s) N2(g) + 3 H2(g) → 2 NH3(g) Na2CO3(s) + H2O(g) + CO2(g) → 2 NaHCO3(s) All of the above processes have a DS > 0.

2H2O(g) ----> 2H2(g) + O2(g) The reaction above is only spontaneous at temperatures above 2000K.  Is the reaction endothermic (+ΔH) or exothermic (-ΔH)?