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secondary 4 | Chemistry
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Jonathan
Jonathan

secondary 4 chevron_right Chemistry chevron_right Singapore

Why is C the answer?

Date Posted: 2 years ago
Views: 174

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every Cu²+ ion needs 2 electrons to become an atom of Cu.
Since 0.08/0.12 = 2/3, the ratio of Au atoms formed to Cu atoms formed with the SAME number of electrons supplied is 2 : 3.
This means the ratio of number of electrons taken in per Au atom to that per Cu atom is 3 : 2.
So Au³+
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