Name: ___________________________ WKST- Molarity Practice Period/Teacher: ___________________________ Show work for each problem by: 1.) Writing the Equation 2.) Filling in variables 3.) Answering with sigfigs/labels. 1) What is the molarity of a 0.30 liter solution containing 0.50 moles of NaCl? 2) If a 0.075 liter solution contains 0.0877 moles of CuSO4, what is the molarity? 3) How many moles of NaCl are present in 600. mL a 1.55 M NaCl solution? 4) How many grams of H2SO4 are present in 1.63 liters of a 0.954 M solution? 5) How many liters of solution are needed to make a 1.66 M solution containing 2.11 moles of KMnO4? 6) What volume, in liters, of a 0.25 M solution can be made using 40.8 g of Ca(OH)2? 7) How many grams of CaCl2 will be needed to make 750 mL of a 0.100 M solution? 8) What is the molarity of a solution prepared by dissolving 40.3 g of NaOH in water to make 280 mL of solution? 9) You are in charge of making all of the solutions your classmates need to do a lab. If there are 6 lab groups and each group needs 250 mL of a 0.057 M solution of NaC2H3O3, what mass of the sodium acetate will you need? 10) Write a brief procedure and explain how you would make 450 mL of a 0.250 M NaOH solution. Remember, use steps to help organize your directions and grams/mL, not mol and liters.
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