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Download Making Dilutions Worksheet Answers Key and more Exercises Chemistry in PDF only on Docsity!
Name: vEN Date: Per: Making Dilutions Worksheet Mavi = M2V2 Remember that you can change the concentration of a solution by adding more solvent. While you cannot increase the concentration of a solution in this manner, you can create a more dilute solution by increasing the amount of solvent. You can determine the amount of a solution needed to dilute-by using the following: M:x Vi=M2x V2 Where M = molarity and V = volume. mM and V} are the initial solution’s molarity and volume, while Mz and V2 are the final solution’s molarity and volume. If needed, you can find the molarity of a solution by the usual formula: A moles of solute/ liters of solution Use the formula and information above to solve the following problems. Show your work and watch labels. The first three problems are questions regarding molarity and the others involve the dilutions formula above. 1. Determine the number of grams of NaHCO: that are in one liter of a 2.1 M solution JAOlg \ywol Naa COz y ——=—— = a. IM 2 Lek asa SFT ral NANCOg le Pol: 2A. [a2 g Nats | 2, Determine the number of grams of NaNO3 that are present in 500 mL ofa 1.0 M solution. 729 = ? p.srme\ Nanos, 8 > |,OM = 2 mols (wool Nands, O39 42.5 Nano | Y mols OS 7 7 3. Determine the number of grams of CCl, in 450 mL of a 3.2 M solution. 3.2mM~ LMols Ws Ca SSA OSL moteed 7 mol = L4H mols 211,449 CCly 4. You need to make 300 mL of a 0.40 M solution of sodium chloride. The only available sohution is 1.0 M. Determine how to make the needed dilution. (,om)(vi) =(0.4 M)(s00mL) {ZOmL ofYhe om Seln + V. = [20 mb ISO mL of Water 1 =~ 5. You have to make 500 mL of a 0.50 M BaClz. You have 2.0 M barium chloride solution available. Determine how to make the needed dilution \2z5mLo£ 2.0M ball, (2, OM)(,) 2{0'50M)[S00mL) | Solution + SISmL V2 126 me yooee 
