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Chemistry
Chemistry
Problem
Which of the following processes at 25 °C is expected to have the most positive value of
Δ
S
∘
\Delta S^{\circ}
Δ
S
∘
? a)
2
NO
2
(
g
)
→
N
2
O
4
(
g
)
2\,\text{NO}_2(g) \;\rightarrow\; \text{N}_2\text{O}_4(g)
2
NO
2
(
g
)
→
N
2
O
4
(
g
)
b)
CO
2
(
g
)
→
CO
2
(
s
)
\text{CO}_2(g) \;\rightarrow\; \text{CO}_2(s)
CO
2
(
g
)
→
CO
2
(
s
)
c)
NH
4
NO
3
(
s
)
→
NH
4
+
(
a
q
)
+
NO
3
−
(
a
q
)
\text{NH}_4\text{NO}_3(s) \;\rightarrow\; \text{NH}_4^{+}(aq) + \text{NO}_3^{-}(aq)
NH
4
NO
3
(
s
)
→
NH
4
+
(
a
q
)
+
NO
3
−
(
a
q
)
d)
NaCl
(
s
)
→
Na
+
(
a
q
)
+
Cl
−
(
a
q
)
\text{NaCl}(s) \;\rightarrow\; \text{Na}^{+}(aq) + \text{Cl}^{-}(aq)
NaCl
(
s
)
→
Na
+
(
a
q
)
+
Cl
−
(
a
q
)
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