In the industrial preparation of Potassium Dichromate, Chromite ore () is first roasted with Sodium Carbonate () and air. What are the two primary products of this fusion step?

Question

In the industrial preparation of Potassium Dichromate, Chromite ore ($FeCr_2O_4$) is first roasted with Sodium Carbonate ($Na_2CO_3$) and air. What are the two primary products of this fusion step?

Prashant Kotian · Accepted Answer

Correct answer: B. The balanced fusion reaction is . Chromium is oxidized from to to form yellow, soluble Sodium Chromate. Iron is oxidized to insoluble .

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