When we write #NaCl(s) stackrel(H_2O)rarr Na^+ + Cl^-#, what do we mean by #Na^+(aq)#, and #Cl^(-)(aq)#?
When salt dissolves in water we commonly write:
What do we mean by
In fact, we mean the
And note that this dissolution represents an unequivocal example of chemical change in that strong (electrostatic) bonds have been broken, and new bonds have been formed.