In: Chemistry
3.- ENTROPY EXERCISES.
From the absolute entropy values calculate the standard entropy
changes (ΔS °) of the following reactions at 25 C
a.- CaCO3(s) →→→ CaO (s) + CO2(g)
b.- N2(g) + 3H2(g) →→→ 2NH3(g)
c.- H2(g) + Cl2(g) →→→ 2HCl (g)
TABLE OF VALUES OF STANDARD ENTROPY (S °):
COMPOUND |
Standard Entropy (S°): J/ K-mol |
CaCO3(s) |
92.9 |
CaO (s) |
39.8 |
CO2(g) |
213.6 |
N2(g) |
192 |
H2(g) |
131 |
NH3(g) |
193 |
Cl2(g) |
223 |
HCl (g) |
187 |