Multiple Choice
A solution is prepared by dissolving 43.0 g potassium chlorate, KClO3, in enough water to make 100.0 mL of solution. If the density of the solution is 1.760 g/mL, what is the molality of KClO3 in the solution?
14. Solutions
Molality
Back14. Solutions
Molality
- Multiple Choice
The density of a 15.7 M methanol (CH3OH) solution is 0.858 g/mL. If H2O is the solvent, what is the molality of the solution?
- Multiple Choice
What is the ionic molality of sodium ions in a solution of 25.7 g NaNO3 dissolved in enough water to make a 150.0 mL of solution? Density of the solution is 1.02 g/mL.
- Multiple ChoiceWhat is the molarity of a solution prepared by dissolving 5.00 g of NaCl in 500.0 mL of water?
- Multiple ChoiceCalculate the molality of an aqueous solution that is 48.0% by mass Ca(NO3)2.
- Open Question
What mass (in g) of nh3 must be dissolved in 475 g of methanol to make a 0.250 m solution?
- Open Question
What is the molar concentration of Na+ ions in 0.0250 m solutions of the following sodium salts in water?
- Open Question
Commercial grade HCl solutions are typically 39.0% (by mass) HCl in water. Determine the molality of the HCl, if the solution has a density of 1.20 g/mL.
- Open Question
If we dissolve 36 grams of salt in 148 grams of water, what is the mass of the resulting solution?
- Open Question
What mass of NaCl is present in 50.0 g of 3.75% (m/m) NaCl solution?
- Multiple ChoiceA solution is prepared by dissolving 20.2 mL of methanol (CH3OH) in 100.0 mL of water at 25°C. The densities of methanol and water at this temperature are 0.782 g/mL and 1.00 g/mL, respectively. What is the molality of the methanol in the solution?
- Multiple ChoiceA solution is prepared by dissolving 23.7 g of CaCl2 in 375 g of water. The density of the resulting solution is 1.05 g/mL. What is the molality of CaCl2 in this solution?
- Multiple ChoiceA solution of LiCl in water has a mole fraction of LiCl, X(LiCl) = 0.0800. What is the molality of the solution?
- Multiple ChoiceAn aqueous solution contains 36% HCl by mass. If the density of the solution is 1.18 g/mL, what is the molality of HCl in the solution?
- Multiple ChoiceCommercial grade hydrochloric acid is typically sold as an aqueous solution that is 39.0% HCl by mass and has a density at 20 °C of 1.20 g/mL. Determine the molality of the HCl solution.