Select the TRUE statement.
(1) Both Copper and Zinc can be extracted by hydrometallurgy
(2) Both Copper and Zinc cannot be extracted by hydrometallurgy.
(3) Copper can be extracted by hydrometallurgy but not zinc.
(4) Zinc can be extracted by hydrometallurgy but not Copper.

Answer: Option 3
Explanation:
Copper is comparatively less active metal as its reduction potential, i.e., Eo(Cu2+ICu) is high (+ 0.34 V). It can be displaced from solutions of Cu2+ ions by more active metals which have Eo values lower than copper. For example, Eo of zinc (Zn2+IZn) is -0.76 V and thus, zinc can displace copper from solutions of Cu2+ ions. In contrast to displace zinc from solutions of Zn2+ ions a more reactive metal than it is required. But, the more active metals readily react with water forming their corresponding ions and evolve hydrogen gas. Thus, it is difficult to displace zinc from solutions of Zn2+ ions. Hence, copper can be extracted by hydrometallurgy but not zinc.

For Free Noteshttps://answerxpert.com/category/notes/
For Free Mock Testshttps://answerxpert.com/category/mock-test/
Youtube channels for video solutionshttps://www.youtube.com/@AveshChemistry_
https://www.youtube.com/@AnswerXpert

Leave a Reply

Your email address will not be published. Required fields are marked *