This was a question out of a chemistry quiz:
When 5.37 g of black copper(II) oxide are mixed with excess sulfuric acid, the solution turns a clear blue, indicating the formation of copper(II) sulfate. How many grams of copper(II) sulphate will be formed in this double displacement reaction?
Further questions:
What exactly is copper (II)?
I don't understand the designation.
Also, what is black copper oxide?
2007-04-30 23:54:07 · 1 answers · asked by The Hammer 2 in Science & Mathematics ➔ Chemistry
There are two oxides of copper. Copper(II) oxide, CuO, is black. Copper(I) oxide, Cu2O, is red.
The number in brackets is the charge on the copper ion - + or 2+.
As for the mass of CuSO4, the calculation required is:
5.37/80 x 160 (for the anhydrous salt).
2007-05-01 00:12:36 · answer #1 · answered by Gervald F 7 · 0⤊ 0⤋