What is the equivalent mass of IO4- when it is converted into I2 in acid medium
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a
M/6
b
M/7
c
M/5
d
M/4
answer is B.
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Detailed Solution
(2)Equivalent mass= Molecular weightChange in oxidation number per moleSuppose molecular weight is MOxidation number of I in IO4- = + 7 and I in I2 is = 0Acidic medium i.e., I × -8 + 1e- = +7 So change in oxidation number is 7 So eq. wt. = M/7