The set-below was used by a student to investigate the products formed when aqueous copper (II) chloride was electrolyzed using carbon electrodes

      

The set-below was used by a student to investigate the products formed when aqueous copper (II) chloride was electrolyzed using carbon electrodes
40carbonelectrodes4252017834.jpg
i) Write the equation for the reaction that takes place at the cathode.
ii) Name and describe a chemical test for the product initially formed at the anode when a highly concentrated solution of copper (II) chloride is electrolyzed.
iii) How would the mass of the anode change if the carbon anode was replaced with copper metal? Explain.

  

Answers


John
i) $Cu_{(aq)^{2+}} + 2e^- \rightarrow Cu_{(s)}$

ii) – Chlorine .

- The product turns moist blue litmus paper to red and then bleaches it (turns white)

iii) the mass would reduce. This is because the copper anode would dissolve.
johnmulu answered the question on May 15, 2017 at 08:56


Next: The set-up below (Figure 2) was used to electrolyse a bromide of metal D, DBr2.
Previous: The apparatus shown in the diagram below were used to investigate the products formed when concentrated sodium chloride was electrolyzed using inert electrodes

View More Chemistry Questions and Answers | Return to Questions Index


Exams With Marking Schemes

Related Questions