英語翻譯
英語翻譯
A 2.50 gram of bronze was dissolved in sulfuric acid.The copper becomes copper (II) sulfate with sulfur dioxide and water the other products.The copper (II) sulfate is then mixed with iodide ion solution to form copper(I)iodide and the triiodide ion(I3-) and sulfate ions.The triiodide ion is next titrated with thiosulfate(S2O3^ 2-) to form iodide ions and S4O6^ 2- ions.Write and balance the equations and calculate the percent by mass of copper in the original sample if 21.5mL of 1.25 M thiosulfate is need in the titration.
A 2.50 gram of bronze was dissolved in sulfuric acid.The copper becomes copper (II) sulfate with sulfur dioxide and water the other products.The copper (II) sulfate is then mixed with iodide ion solution to form copper(I)iodide and the triiodide ion(I3-) and sulfate ions.The triiodide ion is next titrated with thiosulfate(S2O3^ 2-) to form iodide ions and S4O6^ 2- ions.Write and balance the equations and calculate the percent by mass of copper in the original sample if 21.5mL of 1.25 M thiosulfate is need in the titration.
英語人氣：499 ℃時間：2020-02-03 05:12:42
優(yōu)質解答
2.5g銅溶入硫酸,銅變成硫酸銅同時產生二氧化硫和水等,硫酸銅溶入碘離子溶液,形成碘化亞銅和三碘化離子和硫酸根離子.三碘化離子用硫代硫酸鈉滴定從而形成碘離子和S4O6^ 2離子,寫出化學方程式,并計算如果滴定反應中消耗了21.5mL 的1.25mol/L的硫代硫酸鈉,消耗掉的銅的質量百分比,
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