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Byju's Answer
Standard XII
Chemistry
Introduction to Oxidation and Reduction
Calculate the...
Question
Calculate the equivalent weight of the following substance as acid or base.
Z
n
(
O
H
)
2
−
4
If
M
is the molecular weight and
E
is the equivalent weight, then
:
A
E
=
M
3
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B
E
=
M
4
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C
E
=
M
6
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D
None of these
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Solution
The correct option is
B
E
=
M
4
1 mole of
Z
n
(
O
H
)
2
−
4
contains 4 moles of replaceable hydroxide ions.
Hence, its equivalent weight is equal to one fourth of its molecular weight.
Equivalent mass of a base
=
Molar mass of the base
Number of replaceable hydroxide ions
E
=
M
4
Hence the correct option is B.
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