Question

In relative oxidizing and reducing agents table ;
1) Is Al oxidized by Ni+2
2) Is Cu oxidized by Ag+
3) Is Pb oxidized by Na+
4) Is F2 reduced by Cl-
5) Is Br2 reduced by Cl-
and if you or no , how it is as a rule to predict any ?

thank you

Answer 1

You look at the activity series. Here is one on the web.
http://www.cod.edu/people/faculty/jarman/richenda/1551_hons_materials/Activity%20series.htm

Any metal will displace any ion BELOW it in the activity series.
So Al(s) + Ni^2+(aq) ==> Ni(s) + Al^3+(aq) then balance it; 2Al + 3Ni^2+ ==> ?

Cu(s) + Ag^+(aq) ==> Cu^2+(aq) + Ag(s) and balance it.

But Pb(s) + Na^+ ==> no reaction because Pb is BELOW Na^+
+ Ag^+