Tiina Posted March 14, 2019 Posted March 14, 2019 hello, i have an experiment and i want to have the equations but i not sure if i´m right. The Experiment is: you have to give copper(II) sulfate into a test tube and add some drops of dilute ammonium hydroxide until the gelatinous light blue precipitate of copper(II) hydroxide dissolve. Observe the deep blue colour of the resulting solution, caused by the formation of tetraamminecopper(II) ion. Add the same volume of ethanol to the solution to precipitate tetraamminecopper(II) sulfate. The first equation is: 2CuSO4+2(NH3*H2O)=[Cu2(OH)2]SO4+(NH4)2SO4 what is the second equation?????
chenbeier Posted March 14, 2019 Posted March 14, 2019 (edited) Wrong. Copper is already Tetra aquo complex slight blue colour First is [Cu(H2O)4]SO4 + 2 NH3 => Cu(OH)2 + (NH4)2SO4 + 2H2O Cu(OH)2 + 4 NH3 => [Cu(NH3)4(OH)2 [Cu(NH3)4](OH)2 + (NH4)2SO4 => (Ethanol) [Cu(NH3)4]SO4 + 2 NH3 + 2 H2O Edited March 14, 2019 by chenbeier
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