Copper(II) oxide is CuO. When binary compounds (compounds composed of only two elements) decompose, they produce their elements. So the unbalanced equation would be: CuO(s) --> Cu(s) + O2(g) Now you have 1 Cu and 1 O on the reactant side and 1 Cu and 2 O on the product side. To balance, first put a coefficient of 2 in front of CuO so each side has 2 O. 2CuO(s) --> Cu(s) + O2(g) This leaves 2 Cu on the reactant side, but only 1 Cu on the product side so now put a coefficient of 2 in front of Cu so each side has 2 Cu. 2CuO(s) --> 2Cu(s) + O2(g) The equation is balanced!
Correct answer:
Your response:
+
Correct answer:
Cu
Cu
Your response:
Cu
Correct answer:
Cu2+
Cu^2+^
Your response:
Cu2+
+
Correct answer:
2 e-
2 e^-^
Your response:
e-
Metallic copper reacts with an excess of oxygen to form copper(II) oxide or with a deficiency of oxygen to form copper(I) oxide.
+2 for Copper(II)
You need the Ksp of copper sulphide. From that you can use the equation for solubility product - Ksp = [Cu2+].[S-] where the Cu2+ term becomes 25M.
15.0
Copper sulfides describe a family of chemical compounds and minerals with the formula CuxSy. Prominent copper sulfide minerals include Cu2S (chalcocite) and CuS (covellite).
The spectator ions are chloride and ammonium; the copper and phosphate ions precipitate from the solution as copper (II) phosphate.
The chemical formula (not equation) of copper(II) chloride is CuCl2.
+2 for Copper(II)
No copper (II) chloride is an ionic compound.
You need the Ksp of copper sulphide. From that you can use the equation for solubility product - Ksp = [Cu2+].[S-] where the Cu2+ term becomes 25M.
Copper(II) oxide is CuO; II is an indication that in this compound copper is bivalent.
Copper(II) chloride is already a compound; its formula is CuCl2
Copper(II) sulfate has the formula CuSO4.
31.3 g CuO
15.0
Copper sulfides describe a family of chemical compounds and minerals with the formula CuxSy. Prominent copper sulfide minerals include Cu2S (chalcocite) and CuS (covellite).
The spectator ions are chloride and ammonium; the copper and phosphate ions precipitate from the solution as copper (II) phosphate.
When magnesium reacts with copper chloride, an exchange reaction occurs in which magnesium replaces copper, resulting in the formation of magnesium chloride and copper. The balanced chemical equation for this reaction is: Mg + CuCl2 → MgCl2 + Cu.