The metal used to recover copper from a solution of copper sulphate is
A. Na
B. Ag
C. Hg
D. Fe
Answer: Option D
Solution(By Examveda Team)
The metal used to recover copper from a solution of copper sulphate is Fe.This Question Belongs to General Knowledge >> Chemistry
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In reactive series Na is more reactive than Cu then y Na is not used
Fe has greater ability to lose electron than Cu.so Fe lose electron and form iron sulphate and Cu take electrons and collect at cathod as Cu. That's why it displace the Cu by forming iron sulphates
Why we not use sodium?
Ag & Hg are less reactive than copper.
adding sodium - it would ignite before it could react.
Fe is more reaction than copper and would displace it to combine with the sulphate ion, thereby separating copper.