Density molarity and molality
Chapter 12: Physical Properties of Solutions
What is the molarity of a solution that is 5.50 % by mass oxalic acid (C2H2O4) and has a density of 1.0244 g/mL? Ans: 0.626 M. Category: Medium Section: 12.3. 2. What is the molality of a 0.142 M Na3PO4(aq) solution that has a density of 1.015 g/mL? Ans: 0.143 m.
[DOC File]Chemistry Concentrations Worksheet
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Calculate molality (moles of solute/kg of solvent). 5] 8.2 moles of ephedrine in 650 mL of isopropyl alcohol (density = 0.7855 g/mL) 6] 20.0 g of cane sugar, C12H22O11, dissolved in 175 grams of water.
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The volume of the solution is 63.3 mL. Calculate the molarity, molality, and mole fraction of the solution. An aqueous antifreeze solution is 40.0 % enthylene glycol (C2H6O2) by mass. The density is 1.05 g/mL. Calculate the molarity, molality and mole fraction of the solution. Common commercial sulfuric acid is 95% by mass. The density is 1.84 ...
[DOC File]Determining the Molarity of a Saturated Solution
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What is the relationship between temperature and the molarity of a saturated NaCl solution? Phosphoric acid is usually obtained as an 87.0% (by mass) phosphoric acid solution. If it is 13.0 M, what is the density of this solution? What is its molality? An aqueous solution of hydrofluoric acid is 30.0% HF, by mass, and has a density of 1.101 g cm-3.
[DOC File]Chapter 13 worksheet #1
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(You will need the density of water.) Consider a 0.300 M solution of NaOH? Calculate the molality of NaOH. (Assume the density of the solution is the same as the density of pure water.) Notice that the molality is a little bigger than molarity. Why are these two numbers similar and why is molality always greater than molarity?
[DOC File]Chapter 13 worksheet #1
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If there is very little solute (dilute solution) then it is a good assumption that the volume does not change and molarity equals molality. What is the molarity of pure water at 4oC? (Hint: Use the density and molar mass of water.) What happens to the concentration of water when a solute is dissolved in it? (1000 g/L) / 18.0 g/mol = 55.6 mol/L
[DOC File]CONCENTRATION UNITS
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If you are trying to convert molarity to weight/weight percent, assume 1 liter of solution. Let's look at a typical example. Suppose you are given a concentrated solution of HCl which is known to be 37.0% HCl and has a solution density of 1.19 g/mL. What is the molarity, molality and mole fraction of HCl? Begin with the assumption of 100 g of ...
[DOC File]Molarity Problems - Chemistry Geek
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5. What is the molality of a KCl solution that has a density of 1.04 g/mL and a molarity of 2.4 M? % Mass Problems. 1. Determine the mass percent of a LiBr solution that contains 5.9 g LiBr and 40.0 g water. 2. Determine the mass % of a NaCl solution if 58.5 grams of NaCl was dissolved in 50 ml of water (assume the density of water to be 1 g/ml ...
[DOCX File]Molality Worksheet
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Molality and Colligative Properties Homework. What is the molality of a solution that contains 63.0 g HNO 3 in 0.500 kg H 2 O? 2.00m. What is the molality of a solution that contains 0.500 mol HC. 2 H 3 O 2 in 0.125 kg H 2. O? 4.00. m. What mass of water is required to dissolve 100. g NaCl to prepare a 1.50. m. solution? 1.14 kg H. 2. O
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