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25mL of a solution of ferric alum Fe(2)(...

`25mL` of a solution of ferric alum `Fe_(2)(SO_(4))_(3) (NH_(4))_(2) (SO_(4))//24H_(2)O` containing `1.25g` of the salt was boiled with iron when the reaction `Fe + Fe_(2) (SO_(4))_(3) rarr 3FeSO_(4)` occurred treated with `0.107N KMnO_(4)` in acid medium. What is titre value? If `Cu` has been used in place of `Fe` what would have been titre value?

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The correct Answer is:
`36.36mL, 24.24 mL`
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