During the electrolytic refining of copper,Only one correct answerA.The anode is pure copperB.The cathode is a strip of impure copperC.Pure copper is deposited at cathode on passing electric currentD.Oxygen gas is evolved at anode on passing electric current

During electrolytic refining of copper, it gets(a) Deposited on cathode (b) Deposited on anode(c) Deposited on cathode as well as anode (d) Remains in the solution

If a dilute solution of copper(II) chloride is electrolysed, what gas will be produced at the anode? Answer in words not symbols.

Which of the following metal is present in the anode mud during refining of copper

In the electrolytic refining of copper, what reaction occur at the cathode?Select one:a.Cu depositionb.H⁺ reductionc.Cu oxidationd.Cu²⁺ oxidation

Which of the following statements about ‘inert’ electrodes is not true?At the cathode, positive ions gain electrons to become metal elementsThey take part in the electrolysis reactionsThey can be made of carbonAt the anode, negative ions lose electrons and become non-metal elements2Copper can be purified by electrolysis using metal (non-inert) electrodes. Which of the following correctly describes how the electrolysis cell should be set up?Cathode should be impure copper, anode should be pure copperCathode should be carbon, anode should be impure copperCathode should be pure copper, anode should be carbonCathode should be pure copper, anode should be impure copper3What happens at the anode?Copper ions formCopper atoms formSulfate ions formImpurities from the impure copper are collected4What happens at the cathode?Impurities from the impure copper are collectedCopper ions formSulfate ions formCopper atoms form5The core practical investigates the changes in electrode mass during the electrolysis of copper sulfate solution at different currents. Which of the following would you not expect to happen?The higher the current the lower the change in mass between the anode and cathodeThe anode decreases in massThe gain in mass by the cathode is the same as the loss in mass by the anodeThe cathode increases in mass6Sometimes the mass gain at the cathode may be slightly lower than the mass loss at the anode. What is an explanation for this?Some of the propanone used in the washing process may not have evaporated properly from the anodeAll of theseSome of the copper deposited at the cathode may have fallen off during the washing processIf the anode is not pure copper, any impurities will be deposited in the electrolyte rather than at the cathode