Copper sulfate standard solution
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For a 0.02 mol/L copper sulfate standard solution, is copper sulfate pentahydrate or copper sheets better? What method is used for calibration?
If high-purity copper is available, it is of course better to directly dissolve the copper free of oxide films in acid.
This post was last edited by pritiff on 2016-4-21 at 12:40. Oh, go give it a try
Your dissolution method is incorrect; using sulfuric acid alone will result in a slow process. You can use a mixture of sulfuric acid and *ao acid for dissolution, or add a certain amount of hydrogen peroxide to sulfuric acid
Copper sulfate is usually green and turns blue in the presence of ammonia. Isn’t that the case?