An aqueous solution contains 3.6 mM of total ions.

If the solution is NaCl (aq), what is the concentration of chloride ion?

The concentration of the chloride ion is 1.8 mM

Explanation:

Step 1: Data given

An aqueous solution contains 3.6 mM of total ions.

Step 2: The equation

NaCl (aq) → Na + (aq) + Cl - (aq) : two ions

Step 3: Calculate the concentration of the chloride ion

Two ions = 3.6 mM

Chloride ion = 3.6/2 mM = 1.8 mM

Sodium ion = 3.6/2 mM = 1.8 mM

The concentration of the sodium ions is 1.8 mM

The concentration of the chloride ion is 1.8 mM

The total concentration = 3.6 mM