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Chemistry
Chemistry
Problem
Given the following entropy values (in
JK
−
1
mol
−
1
\text{JK}^{-1} \text{mol}^{-1}
JK
−
1
mol
−
1
) at 298 K and 1 atm:
H
2
(
g
)
\text{H}_2(\text{g})
H
2
(
g
)
: 130.6,
Cl
2
(
g
)
\text{Cl}_2(\text{g})
Cl
2
(
g
)
: 223.0 and
HCl
(
g
)
\text{HCl}(\text{g})
HCl
(
g
)
: 186.7. The entropy change (in
JK
−
1
mol
−
1
\text{JK}^{-1} \text{mol}^{-1}
JK
−
1
mol
−
1
) for the reaction,
H
2
(
g
)
+
Cl
2
(
g
)
⟶
2
HCl
(
g
)
\text{H}_2(\text{g}) + \text{Cl}_2(\text{g}) \longrightarrow 2\text{HCl}(\text{g})
H
2
(
g
)
+
Cl
2
(
g
)
⟶
2
HCl
(
g
)
is (1) + 540.3 (2) 727.0 (3) - 166.9 (4) 19.8
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