Calcium chloride (cacl2) is an ionic compound that dissociates in water. a chemist forms a solution by mixing 0.50 mol cacl2 and 1.0 kg of water. how many moles of ions are in the solution?

Calcium chloride (CaCl2) is a salt which dissociates when dissolved in water. Assuming that the dissociation is complete (100 %), then the half reaction for this would be:

CaCl2 - - - > Ca2 + + 2 Cl-

We can see that in 1 mole of CaCl2 salt, 1 mole of Ca2 + ion and 2 moles of Cl - ion is created. Therefore there are 3 moles of ion per 1 mole of CaCl2. Using this ratio, the total number of moles of ions in the solution is:

Total number of ions = 0.5 mol CaCl2 * (3 moles ion / 1 mol CaCl2)

Total number of ions = 1.5 moles ion