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Chemistry
Chemistry
Problem
Which of the following reactions is most likely to have a positive standard entropy change, ΔS° > 0, at 298 K? a)
2
SO
2
(
g
)
+
O
2
(
g
)
→
2
SO
3
(
g
)
2\,\text{SO}_2(g) + O_2(g) \;\rightarrow\; 2\,\text{SO}_3(g)
2
SO
2
(
g
)
+
O
2
(
g
)
→
2
SO
3
(
g
)
b)
N
2
(
g
)
+
3
H
2
(
g
)
→
2
N
H
3
(
g
)
N_2(g) + 3 H_2(g) \;\rightarrow\; 2 NH_3(g)
N
2
(
g
)
+
3
H
2
(
g
)
→
2
N
H
3
(
g
)
c)
2
SO
3
(
g
)
→
2
SO
2
(
g
)
+
O
2
(
g
)
2\,\text{SO}_3(g) \;\rightarrow\; 2\,\text{SO}_2(g) + O_2(g)
2
SO
3
(
g
)
→
2
SO
2
(
g
)
+
O
2
(
g
)
d)
2
N
H
3
(
g
)
+
C
O
2
(
g
)
→
N
H
2
C
O
N
H
2
(
s
)
+
H
2
O
(
l
)
2 NH_3(g) + CO_2(g) \;\rightarrow\; NH_2CONH_2(s) + H_2O(l)
2
N
H
3
(
g
)
+
C
O
2
(
g
)
→
N
H
2
C
O
N
H
2
(
s
)
+
H
2
O
(
l
)
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