way to count # of ions

[Fashionation]

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1) 5mol CaCl2 = 15mol ions since it dissociates into 3 ions (1 Ca2+ and 2Cl-)

2) 5mol BaSo4 = 10 mol ions since it dissociates into 2 ions

3) 5mol KCl = 10 mol ions since it dissociates into 2 ions

4) 5mol CH3OH since it is a non-electrolyte and doesn't dissociate into ions

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So # of charge doesn't matter and simply count # of element/atom charged?

I thought 2) has 4 ions(+2 and -2) but guess it's not right.
Hope to make sure.

 

[ttpharm]

An ion is a charged species, charge doesn't matter. NaCl -> Na+ + Cl -, 2 ions

 

[jwest88]

For 2), BaSO4 dissociates into Ba(2+) and SO4(2-). Each is its own ion.