1. Predict the sign of the entropy change of the system for each of the following reactions:

a) 2SO2(g)+O2(g)→2SO3(g)
b) Ba(OH)2(s) BaO(s) + H2O(g)
c) CO(g) + 2H2(g) CH3OH(l)
d) FeCl2(s) + H2(g) Fe(s) + 2HCl(g)
e) molten Fe solidifies
f) LiCl(s) is formed from Li(s) and Cl2(g)
g) zinc metal dissolves in hydrochloric acid forming ZnCl2(aq) and H2(g)
h) silver bromide precipitates upon mixing AgNO3(aq) and KBr(aq)

2. Using tabulated So values, calculate ΔSo values for the following reactions. In each case account for the sign of ΔSo.

a) C2H4(g) + H2(g) C2H6(g)
b) N2O4(g) 2NO2(g)
c) Be(OH)2(s) BeO(s) + H2O(g)
d) 2CH3OH(g) + 3O2(g) 2CO2(g) + 4H2O(g)
e) N2H4(g) + H2(g) 2NH3(g)
f) 2Al(s) + 3Cl2(g) 2AlCl3(s)
g) Mg(OH)2(s) + 2HCl(g) MgCl2(s) + 2H2O(l)
h) 2CH4(g) C2H6(g) + H2(g)