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Question

For the reaction 3Zn2++2K4[Fe(CN)6]K2Zn3[Fe(CN)6]2+6k+ what will be the equivalent weight of K4[Fe(CN)6] is M ?

A
M
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B
M2
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C
M3
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D
M4
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Solution

The correct option is C M3
Given,
3Zn2++2K4[Fe(CN)6]K2Zn3[Fe(CN)6]2+6K+
From the above reaction it is clearly seen that 2 moles of K4[Fe(CN)6] loses 6K+ ions after the reaction.
1 mole of K4[Fe(CN)6] will have cation loss of 3.
n factor=3
Now, Equivalent weight=Molarmassnfactor
Equivalent weight of K4[Fe(CN)6] here is=M3

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