19. Chemical Thermodynamics
Entropy
19. Chemical Thermodynamics Entropy
19PRACTICE PROBLEM
Without doing any calculations, indicate the signs of ΔH° and ΔS° for each of the following reactions.
(i) H2(g) → 2 H(g)
(ii) 2 Al2O3(s) → 4 Al(s) + 3 O2(g)
(iii) 2 K(s) + Cl2(g) → 2 KCl(s)
(iv) 2 NaBr(s) → 2 Na(s) + Br2(g)
Without doing any calculations, indicate the signs of ΔH° and ΔS° for each of the following reactions.
(i) H2(g) → 2 H(g)
(ii) 2 Al2O3(s) → 4 Al(s) + 3 O2(g)
(iii) 2 K(s) + Cl2(g) → 2 KCl(s)
(iv) 2 NaBr(s) → 2 Na(s) + Br2(g)