In electrorefining of copper, which types of ions are present in the copper sulfate electrolyte?1 mark Zinc ions and gold ionsSilver ions and zinc ions Iron ions and magnesium ionsCopper ions and sulfate ions

What metals are extracted by electrolysis?A:Gold, platinum and silverB:Carbon, oxygen, bauxiteC:Zinc, iron, tin, copperD:Aluminium, sodium, potassium

Based on the reactivity series, which of the following metals can be extracted by the process of electrolysis?Options:CalciumCopperZincGold

Which of the following types of compounds can be broken down by electrolysis?Molten or aqueous covalent compoundsSolid covalent compoundsMolten or aqueous ionic compoundsSolid ionic compounds2Ionic compounds are formed from:Two metalsA metal and a non-metalTwo gasesTwo non-metals3In electrolysis, what is the name of the positive electrode?AnodeElectrolyteCathodeGraphite4During the electrolysis of sodium chloride solution, what product is formed at the anode?HydrogenOxygenSodiumChlorine5During the electrolysis of molten lead bromide, what happens at the cathode?Negative bromide ions gain electrons to form bromine moleculesPositive lead ions gain electrons to form lead atomsPositive lead ions lose electrons to form lead atomsNegative bromide ions lose electrons to form bromine molecules6During the electrolysis of molten lead bromide, what happens at the anode?Negative bromide ions gain electrons to form bromine moleculesPositive lead ions gain electrons to form lead atomsNegative bromide ions lose electrons to form bromine moleculesPositive lead ions lose electrons to form lead atoms

Explain electrorefining of copper with the help of diagram and equations

Which solution is in contact with both the pure and impure copper sheets during electrorefining of copper?1 markSulphuric acidcopper sulphatecopper chlorideHCl