Question

If 4.39 g AlCl3 is dissolved in enough water to make exactly 100.0ml of a solution, what is the molar concentration of the chloride ion?

Answer 1

the molar mass of AlCl3 is ... 133.3 g

the molarity of the Cl is three times the molarity of AlCl3

divide the sample mass by the molar mass to find the moles in solution

molarity is moles per liter , so the chloride ion molarity is 30 times the moles in solution