Question

Standard entropy values (in JK^-1 mol^-1) of
H2(g), Cl2(g) and HCl(g) at 298 K and 1 atm
pressure
130.6. 223 and 186.7
respectively.
H2(g) + Cl2(g) → 2HCl(g) ; Delta r S° = ? (JK^-1) are
+540.3
+727.3
-166.9
+19.8

Answer 1

Answer:

ANSWER

(D) ΔS

∘

=2S

HCl

∘

−(S

H

2

∘

+S

Cl

2

∘

)

=2×186.7−(130.6+223.0)=19.8J/Kmol