Ni(s) | Ni2+(aq) Ag+(aq) | Ag(s)
Zn(s)--- Zn2+(aq)+2e-and Ni2+(aq)+e----Ni(s)
Zn(s)-> Zn2+(aq)+2e- and Ni2+(aq) + 2e- ->Ni(s)
Ni2+(aq) + 2e- Ni(s) and Mg(s) Mg2+(aq) + 2e-
Chemical formula for sulfur is S not S2.
Ni(s) | Ni2+(aq) Ag+(aq) | Ag(s)
Zn(s)--- Zn2+(aq)+2e-and Ni2+(aq)+e----Ni(s)
Ni2+(aq) + 2e- Ni(s) and Mg(s) Mg2+(aq) + 2e-
Ni2+(aq) + 2e- Ni(s) and Mg(s) Mg2+(aq) + 2e-
Zn(s)-> Zn2+(aq)+2e- and Ni2+(aq) + 2e- ->Ni(s)
Al | Al^3+ Zn^2+ | Zn
Ni2+(aq) + 2e- Ni(s) and Mg(s) Mg2+(aq) + 2e-
Al(s) | Al3+(aq) Ni2+(aq) | Ni(s)
Ni2+(aq) + SO42-(aq) + 2 Na+(aq) + 2 OH-(aq) ==> Ni(OH)2(s) + 2 Na+(aq) + SO42-(aq), the ionic equation is ; Ni2+(aq) + 2 OH-(aq)==> Ni(OH)2(s)
molecular: NiCl2 + 2AgNO3 ---> 2AgCl(s) + Ni(NO3)2 ionic: Ni2+ + 2Cl- + 2Ag+ + 2NO3 ---> 2AgCl(s) + Ni2+ + 2NO3- net Ionic 2 Ag + 2 Cl- --> 2AgCl
Ni+2 SO4-2 <--- These are the ions and their charges. The charges have to have a net charge of zero, so one +2 nickel ion cancels out one -2 sulfate ion. The final formula would then be NiSO4
Chemical formula for sulfur is S not S2.