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Chemistry
Chemistry
Problem
Calculate
Δ
G
⊖
\Delta G^\ominus
Δ
G
⊖
for the thermal decomposition of calcium carbonate:
CaCO
3
(
s
)
→
CaO
(
s
)
+
CO
2
(
g
)
\text{CaCO}_3(\text{s}) \rightarrow \text{CaO}(\text{s}) + \text{CO}_2(\text{g})
CaCO
3
(
s
)
→
CaO
(
s
)
+
CO
2
(
g
)
from the following data, and comment on the significance of the value obtained.
Compound
Δ
G
f
⊖
/
kJ mol
−
1
\Delta G_f^\ominus / \text{kJ mol}^{-1}
Δ
G
f
⊖
/
kJ mol
−
1
CaCO
3
(
s
)
\text{CaCO}_3(\text{s})
CaCO
3
(
s
)
–1129
CaO
(
s
)
\text{CaO}(\text{s})
CaO
(
s
)
–604
CO
2
(
g
)
\text{CO}_2(\text{g})
CO
2
(
g
)
–394
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