Understanding the Dissociation

Sodium chloride (NaCl) dissociates in water to form one sodium ion (Na+) and one chloride ion (Cl-):

NaCl(s) → Na+(aq) + Cl-(aq)

Calculating Moles of Ions

* For every 1 mole of NaCl, you get 2 moles of ions.

* Therefore, in 2.5 mol NaCl, you will have 2.5 mol NaCl * 2 mol ions/mol NaCl = 5.0 mol ions.

Answer: There are 5.0 moles of ions in 2.5 mol NaCl.