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Calculate the standard internal energy change for the reaction; OF _2( g ) + H _2 O (…
CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics
Problem
Calculate the standard internal energy change for the reaction;
OF
2
(
g
)
+
H
2
O
(
g
)
⟶
O
2
(
g
)
+
2
HF
(
g
)
\text{OF}_2(\text{g}) + \text{H}_2\text{O}(\text{g}) \longrightarrow \text{O}_2(\text{g}) + 2\text{HF}(\text{g})
OF
2
(
g
)
+
H
2
O
(
g
)
⟶
O
2
(
g
)
+
2
HF
(
g
)
at 298 K. The standard enthalpies of formation of
OF
2
(
g
)
\text{OF}_2(\text{g})
OF
2
(
g
)
,
H
2
O
(
g
)
\text{H}_2\text{O}(\text{g})
H
2
O
(
g
)
,
HF
(
g
)
\text{HF}(\text{g})
HF
(
g
)
are +20, +250 and -270
kJ mol
−
1
\text{kJ mol}^{-1}
kJ mol
−
1
.
Related theory
Thermodynamics
First law of thermodynamics
Measurement of $\Delta U$ and $\Delta H$
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