Chemistry I Molarity Worksheet Name ______________________________ Hour ________ 1. What is the molarity of sodium hypochlorite bleach solution make from 125 g of NaClO in 2.0 L of solution? 2. What volume in liters of a 2.5 M solution of acetic acid, CH3COOH, is needed to provide 256 g of acetic acid? 3. What mass in grams of copper sulfate pentahydrate, CuSO4 ·5H2O, is needed to make 75.0 ml of a 0.250 M solution? 4. What is the molarity of a solution composed of 2.25 g of HCl in 0.450 L of solution? 5. What volume in liters of a 1.50 M solution of Ba(OH)2 is needed for a reaction that requires 125.6 g Ba(OH)2? 6. What mass in grams of solid Ca3(PO4)2 results if 750.0 ml of a 6.00 M H3PO4 reacts with an excess of Ca(OH)2 according to the reaction below? 2H3PO4 (aq) + 3Ca(OH)2 (aq) → Ca3(PO4)2 (s) + 6H2O (l) 7. What volume in liters of a 0.500 M solution of copper (II) sulfate, CuSO4, is needed to react with an excess of aluminum to provide 11.0 g of copper? 3 CuSO4 (aq) + 2 Al (s) → 3 Cu (s) + Al2(SO4)3 8. 20.0 ml of K2SO4 are used in a double replacement reaction with excess calcium hydroxide solution. What is the molarity of K2SO4 solution if 2.00 g of dried KOH are recovered after the reaction has taken place?