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
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Answer:
ANSWER
(D) ΔS
∘
=2S
HCl
∘
−(S
H
2
∘
+S
Cl
2
∘
)
=2×186.7−(130.6+223.0)=19.8J/Kmol
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