STK1213 tutorial 74463.pdf - LU2 Tutorial 1 A solution with...

This preview shows page 1 - 3 out of 5 pages.

LU2 Tutorial 1. A solution with a final volume of 500.0 mL was prepared by dissolving 25.00 mL of methanol (CH3OH, density = 0.7914 g/mL) in chloroform. (a) Calculate the molarity of methanol in the solution. (b) The solution has a density of 1.454 g/mL. Find the molality of methanol.
b) Molality = moles of solute / kilograms of solvent
2. 48.0 wt% solution of HBr in water has a density of 1.50 g/mL. (a) Find the molar concentration of HBr. (b) What mass of solution contains 36.0 g of HBr? (c) What volume of solution contains 233 mmol of HBr? (d) How much solution is required to prepare 0.250 L of 0.160 M HBr?

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture