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Balance the following equation by oxidat...

Balance the following equation by oxidation number method in acidic medium.
`Cr_(2)O_(7)^(2-)+Fe^(2+)+H^(+)toCr^(3-)+Fe^(3+)+H_(2)O`

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`Cr_(2)O_(7)^(2-)+6Fe^(2+) +14H^(+) to 2Cr^(3+)+6Fe^(3+)+7H_(2)O`
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