Question

Calculate the standard entropy values for the following reactions at 25°C.

1. N2(g) + 3H2(g) ⟶ 2NH3(g)

2. H2(g) + Cl2(g) ⟶ 2HCl(g)

3. 2CO2(g) + O2(g) ⟶ 2CO2(g)

4. 3O2(g) ⟶ 2O3(g)

5. 2NH3 (g) + CO2 (g) ⟶ NH2CONH2 (aq) H2O(l)

Answer 1

$1)Sº(N2)(g) = 191.6 J K^-1 mol^-1$

$2)Sº(H2)(g) = 130.6 J K^-1 mol^-1$

$3)Sº(CO2)(g) = 189.2 J K^-1 mol^-1$

$4)Sº(O2)(g) = 117.4 J K^-1 mol^-1$

$5)Sº(NH3)(g) = 193.3 J K^-1 mol^-1$