Of the following reactions: a. 2 H_2S(g) + 3 0_2(g) rightarrow 2 H_20(g) + 2 SO_
ID: 1008750 • Letter: O
Question
Of the following reactions: a. 2 H_2S(g) + 3 0_2(g) rightarrow 2 H_20(g) + 2 SO_2(g) Delt H degree_rxn = -1037 kJ, journal degree_rxn = -152.4 J/K b. 2 S0_2(g) + 0_2(g) rightarrow 2 S0_3(g) DeltaHdegree_rxn = - 197.8 KJ, journal degree_rxn = -187.8 J/K C. SO_3(g) + H_2O(l) rightarrow H_2SO_4(l) DeltaHdegree_rxn = -132.5 kJ, journal degree_rxn = -169.9 J/K d. S(g) + 0_2(g) rightarrow SO_2(g) DeltaHdegree_rxn = -574.0 kJ, journal degree_rxn = -124.6 J/K Which are spontaneous at (a) high temperatures? (b) low temperatures? (c) all temperatures?Explanation / Answer
if DH is -ve, Ds is +ve the reaction is spontaneous at all temperatures.
if DH is +ve, Ds is +ve the reaction is spontaneous at high temperatures.
if DH is -ve, Ds is -ve the reaction is spontaneous at low temperatures.
ex : a,b,c,d ( all are spontaneous at low temperatures)
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