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Write the balanced equations in the manu...

Write the balanced equations in the manufacture of potassium dichromate from chromite ore.

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`4FeCr_(2)O_(4)+8Na_(2)CO_(3)+7O_(2) to 8Na_(2)CrO_(4) +2Fe_(2)O_(3)+8CO_(2)`
`2Na_(2)CrO_(4)+2H^(+) to Na_(2)Cr_(2)O_(7) +2Na^(+) +H_(2)O`
`Na_(2)Cr_(2)O_(7) +2KCl to K_(2)Cr_(2)O_(7) +2NaCl`.
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