What is the chloride ion concentration (M)in a solution that contains 0.100 M aluminum chloride?
A)0.100
B)0.300
C)0.050
D)0.033
E)0.200

Question

Quizplus · Accepted Answer

In aluminum chloride, the ion is Al3+ and the ion is Cl-. For every one Al3+ ion there are three Cl- ions, so the chloride ion concentration will be three times the concentration of aluminum chloride: 
Cl- concentration = 3 x 0.100 M = 0.300 M

What Is the Chloride Ion Concentration (M)in a Solution That