Hi I am unsure of this question, as my teacher didn't have time to complete the course before study:
2H20 + SO2 + 2[CuCl4]2- => 4H+ SO42- + 4Cl- + 2[CuCl2]-
Identify the element being reduced in this reaction and write a half equation for the reduction of the species containing this element.
who has a clear definition of 'oxidation number'?
The oxidation number is defined as the sum of negative and positive charges in an atom, which indirectly indicates the number of electrons it has accepted or donated.
or u can have this one if u prefer....
The oxidation number is the charge an atom would carry if the molecule or ion were completely ionic
p.s - could someone please look at my other chemistry post please...really need help with that question.