Oxidation and reduction (redox) reactions are opposing reactions that occur simultaneously.įigure 4. Sulfuric acid in the test chamber helps to remove the alcohol from the exhaled air into the test solution and to provide the necessary acidic conditions. Zinc sulfate is used as a reagent in analytical chemistry and for paper bleaching, as a component of spinning bath in the manufacture of rayon, and as a chemical intermediary for the manufacture of carbamate fungicides, zinc metal, and other zinc. ![]() Silver nitrate serves as a catalyst for the reaction to increase the rate at which the dichromate gets reduced. Zinc potassium chromate is used as a rust inhibitor in metal paints and as an artists colour.
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