Ionic compounds dissociate in solution, multiplying the molarity by the number of ions present

What is the Chloride Concentrations [Cl^-] in the following solutions?

2.0M NaCl  

   since NaCl dissolves according to this reaction     NaCl => Na⁺ + Cl^-  

                          the NaCl to Cl^- ratio is 1:1, therefore [Cl^-]= 1 x 2.0M =2.0M 

1.5M AlCl₃

     since AlCl₃ dissolves according to this reaction     AlCl₃ = > Al³⁺ + 3 Cl^- 

                          the AlCl₃ to Cl^- ratio is 1:3, therefore [Cl^-]= 3 x 1.5M= 4.5M   

 2.0M CaCl₂

     since CaCl₂ dissolves according to this reaction     CaCl₂ = > Ca²⁺ + 2 Cl^-

                          the CaCl₂  to Cl^- ratio is 1:2, therefore [Cl^-]=  2 x 2.0M= 4.0M