PLEASE HELP ive been searching the net for hours

[hannahD]

sodium chloride + cobalt chloride = sodium chloride + cobalt chloride
same thing!
except when it came to writing the chemical equation..

Na⁺Cl^- + Co ²⁺Cl₂^- = Na+Cl₂ ^- + Co²⁺Cl₂^-
ITS DIFFRENT?
and
would it be (aq) + (aq) = (aq) + (aq)
when supposed to be..(aq)+(aq)= (s) + (aq)


HELP ME PLEASEE