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Determine the equivalent mass of theBr(2...

Determine the equivalent mass of the`Br_(2)`(l)[Molecular mass =159.82] in the given reaction
`2MnO^(-)_(4)(aq)+8H(aq)+br_(2)(l)to2Mn^(2+)(aq)+2BrO^(-)_(3)(aq)+2H_(2)O(l)`

Text Solution

Verified by Experts

In the given reaction ,the oxidation half- reaction is-
`Br_(2)(l)+6H_(2)O(l)toBrO-_(3)(aq)+12H^(+)(aq)+10e`
The number of electrons involved in the oxidation of molecule of `Br_(2)=10`
Equivalent mass Of `Br_(2)`
`("Molecular mass of "Br_(2))/("Number of electrons involved per molecule "of Br_(2)" in its oxidation")`
` (159.82)/(10)=15.982`
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