Balance the following equation for an oxidation-reduction reaction. What are the correct coefficients for the reactants and products in order from left to right? _Al(s) + _Zn2+(aq) -->_Al3+(aq) + _Zn(s)
I think it is easy... don't get me wrong if i make a mistake. First thing first eliminate Elements/Molecules that are just there... doing nothing. In this case u have none. You have 2 know this: All elements in standard form have O.N. #=0 meaning Al(s)=0 ---> Zn(s)=0. Now the ions have that are charged will have same O.N. # as the charge on it so... Zn2+= 2+ ---> Al3+= 3+ notice the change of O.N.# as the reaction occurs.
0 2+ 3+ 0 Determine the change of O.N # in Ratio:
Al(s) + Zn(aq) 2+ ---> Al(aq) 3+ Zn(s) In this case Al: 3
Zn: 2 --> flip the ratio and make them the co-efficient of the elements in reaction...
2Al(s) + 3Zn(aq)2+ ---> 2Al(aq) 3+ + 3Zn(s) I did this long time ago, but I know that most of it is correct maybe im messing up near the end. Don't count on it