標題: Copper(II) sulphate [打印本頁] 作者: lawkanok 時間: 20/3/2009 03:26 PM 標題: Copper(II) sulphate Can the copper(II) sulphate prepared by mixing the sodium sulphate with copper(II) chloride? Thank you very much作者: inthomaspy 時間: 20/3/2009 04:08 PM No. because when copper(II) chloride is mixed with sodium sulphate, the solution will contain CuCl2, Na2SO4, CuSO4 and NaCl. these four chemicals are all soluble in water and it is very difficult to isolate CuSO4 from the other three water-soluble chemicals
PS, CuSO4 can be prepared by mixing copper(II) chloride with sodium carbonate. A precipitate (CuCO3) is formed. carry out filtration to obtain the precipitate and add dilute sulphuric acid to the precipitate. CuCl2 (aq) + Na2CO3 (aq) -->CuCO3 (s) + 2NaCl (aq) CuCO3 (s) + H2SO4 (aq) -->CuSO4 (aq) + H2O (l)+ CO2 (g)
