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Problem
Problem
Identify which of these methods of producing hydrochloric acid,
HCl
\text{HCl}
HCl
, has the highest atom economy. Method 1:
2
NaCl
(
s
)
+
H
2
SO
4
(
l
)
→
2
HCl
(
g
)
+
Na
2
SO
4
(
s
)
2\text{NaCl}(\text{s}) + \text{H}_2\text{SO}_4(\text{l}) \rightarrow 2\text{HCl}(\text{g}) + \text{Na}_2\text{SO}_4(\text{s})
2
NaCl
(
s
)
+
H
2
SO
4
(
l
)
→
2
HCl
(
g
)
+
Na
2
SO
4
(
s
)
Method 2:
H
2
(
g
)
+
Cl
2
(
g
)
→
2
HCl
(
g
)
\text{H}_2(\text{g}) + \text{Cl}_2(\text{g}) \rightarrow 2\text{HCl}(\text{g})
H
2
(
g
)
+
Cl
2
(
g
)
→
2
HCl
(
g
)
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