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Class 12 NEET Chemistry Electrochemistry Questions
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© examsnet.com
Question : 60
Total: 74
The mass of carbon anode consumed (giving only carbon dioxide) in the production of
270
‌
kg
of aluminium metal from bauxite by the Hall process is
(Atomic mass :
Al
=
27
)
(2005)
270
‌
kg
540
‌
kg
90
‌
kg
180
‌
kg
Validate
Solution:
3
C
+
2
Al
2
O
3
(
From
‌
bauxite
)
→
4
‌
Al
+
3
CO
2
4 moles of
Al
is produced by 3 moles of
C
1 mole of
Al
is produced by
3
4
mole of
C
10
4
moles of
Al
is produced by
3
4
×
10
4
‌
moles
of
C
.
Amount of carbon used
=
3
4
×
10
4
×
12
g
=
90
‌
Kg
© examsnet.com
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