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Industrial production of liquid ammonia involves gas-phase synthesis followed by…
CHEMISTRY · Subjective · A Level · Chemistry · Energetics · Energetics
Problem
Industrial production of liquid ammonia involves gas-phase synthesis followed by condensation: (1)
N
2
(
g
)
+
3
H
2
(
g
)
→
2
N
H
3
(
g
)
N_2(g) + 3\,H_2(g) \to 2\,NH_3(g)
N
2
(
g
)
+
3
H
2
(
g
)
→
2
N
H
3
(
g
)
Δ
H
1
=
−
92.4
kJ
\Delta H_1 = -92.4\,\text{kJ}
Δ
H
1
=
−
92.4
kJ
(2)
N
H
3
(
g
)
→
N
H
3
(
l
)
NH_3(g) \to NH_3(l)
N
H
3
(
g
)
→
N
H
3
(
l
)
Δ
H
2
=
−
23.5
kJ
\Delta H_2 = -23.5\,\text{kJ}
Δ
H
2
=
−
23.5
kJ
Determine the energy released, in kJ per kilogram of
N
H
3
(
l
)
NH_3(l)
N
H
3
(
l
)
produced.
Related theory
Thermodynamics
Types of enthalpy
Enthalpy Changes of Reactions
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