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Equivalent mass and n-factor for acids, bases and salts
NEET level
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Difficulty 1 of 3
eq004
The equivalent mass of
Al
(
OH
)
X
3
(molar mass
78
g
mo
l
−
1
) in its complete neutralisation by an acid is:
A
78
B
39
C
52
D
26
Answer: D
Complete neutralisation of
Al
(
OH
)
X
3
takes up three
H
X
+
(three
OH
X
−
replaced), so
n
=
3
. Equivalent mass
=
78/3
=
26
.
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