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Problem
Problem
A reaction has an enthalpy change of
+
50
kJ
+50\,\text{kJ}
+
50
kJ
for the process
A
(
g
)
→
B
(
g
)
\text{A}(g) \rightarrow \text{B}(g)
A
(
g
)
→
B
(
g
)
. What is the enthalpy change for the process
2
B
(
g
)
→
2
A
(
g
)
2\,\text{B}(g) \rightarrow 2\,\text{A}(g)
2
B
(
g
)
→
2
A
(
g
)
? a)
+
100
kJ
+100\,\text{kJ}
+
100
kJ
b)
−
50
kJ
-50\,\text{kJ}
−
50
kJ
c)
−
100
kJ
-100\,\text{kJ}
−
100
kJ
d)
+
50
kJ
+50\,\text{kJ}
+
50
kJ
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