Which reaction is accompanied by an increase in entropy? Select one: O a. BaO(s) + CO2(g) → BaCO3(s) O b. CH4(g) + H20g) → CO(g) + 3H2(g) → 2 NH3(g) O c. N2(g) + 3 H2(g) O d. ZnS(s) + 3/2 Ozlg) + ZnO(s) + SO2G) e. Na,CO3(s) + CO2(g) + H20(g) + 2 NaHCO3(5)

Determine whether the reactions are entropy-favored or disfavored under standard conditions. Predict how a decrease in temperature will affect the value of A,G°. Br2 (g) → 2 Br(g) a Standard entropy for some substance given below. Compound S°, J/K· mol Br2 (g) 245.47 Br(g) 175.022 The reaction is v under standard conditions. With a decrease in temperature, A,G° will b. 2 СО(g) + О:(s) > 2 СО2(g) Standard entropy for some substance given below. Compound S', J/K · mol CO(g) 197.674 CO2(g) 213.74 O2 (g) 205.07 The reaction is v under standard conditions. With a decrease in temperature, A,G° will SiCl, (g) + 2 H20(e) → SiO2 (s) + 4 HCl(g) с. Standard entropy for some substance given below. Compound S°, J/K · mol SİCL, (g) 330.86 H20(e) 69.95 SiO2 (s) 41.46 HCl(g) 186.2 The reaction is V under standard conditions. With a decrease in temperature, A,G° will |

The change in entropy, Δ?∘rxnΔ, is related to the the change in the number of moles of gas molecules, Δ?gas. Determine the change in the moles of gas for each of the reactions and decide if the entropy increases, decreases, or has little or no change.   A. KO2(s) ⟶ K(s)+O2(g)   Δ?gas=   mol The entropy, Δ?∘rxn, decreases. has little or no change. increases. B. H2O2(l) ⟶ H2(g)+O2(g) Δ?gas=   mol The entropy, Δ?∘rxn, decreases. has little or no change. increases. C. C2H2(g)+3O2(g) ⟶ 2CO2(g)+2H2O(l) Δ?gas=   mol The entropy, Δ?∘rxn, has little or no change. decreases. increases. D. 2NH3(g) ⟶ N2(g)+3H2(g) Δ?gas=   mol The entropy, Δ?∘rxn decreases. has little or no change. increases.

For which of the following reactions is there an increase in entropy? I.       CO2 (g) → CO2 (s) II.      2 NH3 (g) → N2 (g) + 3 H2 (g) III.     2 NO2 (g) → N2O4 (g)