Question

A chemist prepares a solution of iron(II) chloride (FeCl2) by measuring out 0.45 g of FeCl, into a 50 mL volumetric flask and filling to the mark with distilled water. Calculate the molarity of Clanions in the chemist's solution Be sure your answer is rounded to the correct number of significant digits. xs ? Explanation Check 20%- old

Answer 1

solution : mass of FeCl2 = 0.459 mole of Fedz = 'mass mass molecular mass 0-45 126.75 - 0.00355 mole mole of cions = 2X 0.00355 -0.00710 volume of the solution = some = 50 L 1000 molarity of ce= moles of ce- volume of solution in L 0.00710 so 1000 = 0.142M = 1-4 X10' M Ans (2 significant figues)