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Question
Chemistry
Potash alum dissolves in water to give a/an
Q. Potash alum dissolves in water to give a/an
2873
318
Manipal
Manipal 2008
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A
acidic solution of
H
2
S
O
4
B
alkaline solution
C
acidic solution of
H
Cl
D
neutral solution
Solution:
K
2
(
S
O
4
)
⋅
A
l
2
(
S
O
4
)
3
⋅
24
H
2
O
gives
K
2
S
O
4
+
A
l
2
(
S
O
4
)
3
+
24
H
2
O
A
l
2
(
S
O
4
)
3
undergoes hydrolysis to give
H
2
S
O
4
A
l
2
(
S
O
4
)
3
+
6
H
2
O
⟶
2
A
l
(
O
H
)
3
+
3
H
2
S
O
4
due to which aqueous solution of potash alum is acidic.