Final answer:
The calcium ion concentration in a 1.5 M calcium chloride solution is 3 M, and the chloride ion concentration is also 3 M.
Step-by-step explanation:
The calcium ion concentration, [Ca2+], in a 1.5 M calcium chloride, CaCl2, solution is 3 M. This is because calcium chloride dissociates completely in water, releasing two calcium ions for every formula unit dissolved. Therefore, each calcium ion contributes a concentration of 1.5 M, resulting in a total concentration of 3 M.
The chloride ion concentration, [Cl1-], in the same solution is also 3 M. This is because each CaCl2 formula unit dissociates into two chloride ions. Since the initial concentration of CaCl2 is 1.5 M, each chloride ion also contributes a concentration of 1.5 M, resulting in a total concentration of 3 M.