Oxidation numbers (1 Viewer)

[Riviet]

If the question states that "copper metal was added", we can assume that it's in its solid form, ie Cu with no charge. When it undergoes oxidation, it becomes Cu₂₊, because it tends to lose 2 electrons, I can't explain why it's 2 sorry. I would guess it's because copper has 2 electrons in the outter shell and would donate both rather than just one. I hope that helps.

 

[YBK]

If the question states that "copper metal was added", we can assume that it's in its solid form, ie Cu with no charge. When it undergoes oxidation, it becomes Cu₂₊, because it tends to lose 2 electrons, I can't explain why it's 2 sorry. I would guess it's because copper has 2 electrons in the outter shell and would donate both rather than just one. I hope that helps.

Yeah, but solid copper can become Cu+ also. Check the table of standard potentials. That's what's kinda confusing... But I think the one they give in the HSC only has Cu2+. So it's all good

 

[XcarvengerX]

Yeah, but solid copper can become Cu+ also. Check the table of standard potentials. That's what's kinda confusing... But I think the one they give in the HSC only has Cu2+. So it's all good

They can put in Cu⁺ if they want to because it is in the data sheet anyway. It is more confusing if you do Shipwrecks option.