Posted by steph on Wednesday, November 16, 2011 at 9:53pm.
It is true than an equal number of positive and negative CHARGES are formed but that isn't the same as the number of positive and negative ions. For example,
NaCl ==> Na^+ + Cl^-.
1 mole NaCl dissociates, 1 mole Na^+ and 1 mole Cl^- are formed AND 1 mole of + and 1 mole of - negative charges are formed. BUT, when dissociates as in
MgCl2 --> Mg^2+ + 2Cl^-
then you see that we have 1 mole of 2+ charges and 2 moles of 1- charges so the charges are equal; however, we have 1 mole Mg^2+ and 2 moles Cl^-. Again, the charges are equal but the number of + and - ions are not the same.
so then how would you make the statement true?
Read my post again. I told you twice how to make it true.
oh sorrry.....i got it.
when an ionic compound dissolves in water an equal number of positive and negative charges are created.
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