Answer to Question #332124 in General Chemistry for Ash

Question

1. Determine S for the reaction:

SO3(g) + H2O(l) —> H2SO4(l)

Given: S°(J/K·mol): 256.2 69.9 156.9

2. Calculate S for the reaction

SO2(s) + NO2(g) —> SO3(g) + NO(g)

Given: S°(J/K·mol): 248.5 240.5 256.2 210.6

3. Calculate S at 25C for the reduction of given these absolute entropies:

2PbO(s) + C(s) —> 2Pb(s) + CO2(g)

Given: S°(J/K·mol): 69.54 5.7 64.89 213.6

Answer 1

1. ∆ S = -169.2 J/K•mol

2. ∆ S = -22.2 J/K•mol

3. ∆ S = 198.6 J/K•mol