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Byju's Answer
Standard XII
Chemistry
Mole Concept
Gold sol can ...
Question
Gold sol can be prepared by:
A
Hydrolysis of
A
u
C
l
3
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B
Oxidation of gold by 'Aqua Regia'
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C
Peptization
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D
Reduction of
A
u
C
l
3
with
H
C
H
O
solution
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Solution
The correct option is
D
Reduction of
A
u
C
l
3
with
H
C
H
O
solution
2
A
u
C
l
3
+
3
H
C
H
O
+
3
H
2
O
→
2
A
u
+
3
H
C
O
O
H
+
6
H
C
l
Suggest Corrections
0
Similar questions
Q.
Gold sol can be prepared by Bredig's arc method.
Q.
Assertion :Gold sol is hydrophobic and multimolecular. Reason: Gold sol is prepared by Bredig's arc method.
Q.
Colloidal solutions of metals like gold can be prepared when their salt solutions react with certain substances like
S
n
C
l
2
, formaldehyde, phenyl hydrazine, etc.
2
A
u
C
l
3
+ 3
S
n
C
l
2
→
3
S
n
C
l
4
+
2
A
u
s
o
l
The above method is an example of:
Q.
Gold sol is prepared by Bredig's arc method.
Q.
Explain the preparation of Gold Sol by Bredig's arc method ?
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