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Question
Chemistry
In the extraction of chlorine by electrolysis of brine .
Q. In the extraction of chlorine by electrolysis of brine _________.
2720
275
General Principles and Processes of Isolation of Elements
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A
oxidation of
C
l
−
ion to chlorine gas occurs
75%
B
reduction of
C
l
−
ion to chlorine gas occurs
17%
C
for overall reaction
Δ
G
°
has negative value
6%
D
a displacement reaction takes place
2%
Solution:
In the extraction of chlorine by electrolysis of brine, oxidation of
C
l
−
ion to chlorine gas occurs.
2
C
l
−
+
2
H
2
O
→
2
O
H
−
+
H
2
+
C
l
2