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Question
Chemistry
Which one of the following electrolytes has the same value of van’t Hoff’s factor (i) as that of Al2(SO4)3 (if all are 100% ionised) ?
Q. Which one of the following electrolytes has the same value of van’t Hoff’s factor (i) as that of
Al
X
2
(
SO
X
4
)
X
3
(if all are 100% ionised) ?
4285
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A
Al
X
2
(
SO
X
4
)
X
3
15%
B
K
X
4
[
Fe
(
CN
)
X
6
]
61%
C
K
X
2
SO
X
4
11%
D
K
X
3
[
Fe
(
CN
)
X
6
]
13%
Solution:
van't Hoff factor of
Al
X
2
(
SO
X
4
)
X
3
2
Al
X
+
3
+
3
SO
X
4
−
2
so n = 5
K
X
4
[
Fe
(
CN
)
X
6
]
4
K
X
+
+
[
Fe
(
CN
)
X
6
]
X
−
4
so n =5
⇒
i = n =5