Question c. (shown in photo 1). Book states that answer is " Cu oxidised (0
+2), N reduced (+5
As can be seen from my working on it in photo 2, I have also come to this conclusion, however, it also appears that H has gone from an oxidation state of +1
+2, and that O has gone from an oxidation state of -6
-4 (i.e. they've both been oxidised). Why am I wrong? I have followed everything the teacher has said to do...
And then in question d. it gets even more mind f**king. You can see my assigning of oxidation states/numbers to the elements in the bottom of photo 2. I get that Pb has gone from +4 to +2 and that Cl has gone from -1 to 0 (in one situation...). Cl HAS ALSO gone from -1 to -2??? WHAT??? On top of that, like in the previous question, H has gone from +1 to +2. I am losing my mind.