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Calculate the number of moles of Sn^(2+)...

Calculate the number of moles of `Sn^(2+)` ion oxidise by 1 mole of `K_(2)Cr_(2)O_7` in acidic medium.

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The correct Answer is:
3
`[Sn^(2+) rarr Sn^(4+) +2e^(-)]xx3`
`:.` 1 mol of `K_(2)Cr_(2)O_7` will oxidise 3 mole of `Sn^(2+)`
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