Question #52778
Which of the following metal cannot be extracted from its aqueous solution by electrolysis? and why?
A) Ni B) Au C) Cu D) Al
A) Ni B) Au C) Cu D) Al
Expert's answer
D) Al
Aluminium has the highest negative electrode potential of mentioned metals. In aqueous solutions aluminium will cause the electrolysis of water and extraction of hydrogen gas. That is why aluminium can be extracted only from the molten aluminium.
Aluminium has the highest negative electrode potential of mentioned metals. In aqueous solutions aluminium will cause the electrolysis of water and extraction of hydrogen gas. That is why aluminium can be extracted only from the molten aluminium.
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#340153 on Dec 2023
#340153 on Dec 2023
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