Asked by tracy

what is the molarity of iodine ions in a 100 mL solution containing 2.50g of MgI2?
Answered by Phillip
2.5g X 1mol MgI2/ molar mass = mol MgI2

Molarity= mol of solute/ volume of solution (in L)
Answered by DrBob222
Phillip has calculated the molarity of MgI2 correctly. The problem asks for molarity of iodide ions and that will be just twice the molarity of MgI2.