A solution is prepared by dissolving 4.9g of sucrose in 17g water. Calculate the boiling point, freezing point and osmotic pressure of this solution at 25 degree Celsius.

  1. 👍
  2. 👎
  3. 👁
  1. mols sucrose = grams/molar mass = 4.9/342 = ?
    m = molality = mols sucrose/kg solvent = ?mols sucrose/0.017 kg = ?
    dT = Kf*m. You have Kf for water and molality from above. Solve for delta T then normal freezing point - delta T = new freezing point. Kf is 1.86 for water.

    dT = Kb*m
    You have Kb for water (0.512), m from above, solve for delta T. Then normal boiling point for H2O + delta T = new boiling point.

    osmotic pressure = MRT
    You know T (remember to use kelvin), and R (universal gas constant). Convert molality (m) to molarity (M) and solve for osmotic pressure. For very dilute solutions m may be used interchangeably with M
    Post your work if you get stuck.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. General Chemistry

    A solution was prepared by dissolving 18.00 grams glucose in 150.0 grams water. The resulting solution was found to have a boiling point of 100.34 0C. Calculate the molar mass of glucose. (Kb (water) = 0.51 0C kg/mol; Tb(water) =

  2. biology

    In the lab, you use a special balloon that is permeable to water but not sucrose to make an "artificial cell." The balloon is filled with a solution of 20% sucrose and 80% water and is immersed in a beaker containing a solution of

  3. chemistry! URGENT

    A standard solution is prepared for the analysis of fluoxymesterone (C20H29FO3), an anabolic steroid. A stock solution is first prepared by dissolving 10.0 mg of fluoxymestrone in enough water to give a total volume of 500.0 ml. A

  4. Chemistry

    Explain the following observations using chem principles: When table salt and sugar are dissolved in water, it is observed that: 1. Both solutions have a higher boiling point than pure water. 2. the boiling point of .1 M NaCl

  1. Chem

    How will you make a 200 mL solution of 1 mM sucrose from a 0.1 M sucrose solution? 1. Mix 20 mL of the 100 mM sucrose and 180 mL of water. 2. Mix 50 mL of the 100 mM sucrose and 150 mL of water. 3. Mix 1 mL of the 100 mM sucrose

  2. chemistry

    A solution is prepared by dissolving 17.1grams of sucrose, c12h22o11, in 275grams of h20. what is the molality of that solution? I know what formula to use, but can someone please show me all the steps to get the answer. Thanks:)

  3. Chemistry

    Calculate the pH of a solution prepared by dissolving 12.2 g of benzoic acid in enough water to produce a 500 mL solution. Ka = 6.3 x 10^-5

  4. CHEMISTRY- molality

    a sucrose solution was prepared by dissolving 13.5g sucrose in enough water to make 100ml of solution. the density is 1.050gml. calculate molality

  1. chemistry

    calculate the molarity of the solution prepared by dissolving 16.45g NH4NO3 in water to make 250.mL solution.

  2. Chemistry

    Which of the following statements about boiling points are false: A. the boiling point of 0.1 m KF(aq) is lower than the boiling point of 0.1 m ethanol(aq) B. the boiling point of a 0.5 m aqueous solution of NaOH is the same as

  3. Chemisty Help Please!

    A solution is prepared by dissolving 25.0 g of glucose, C6H12O6, in 125 g of water at 25oC. (show work please) Determine the freezing point of the solution.

  4. Chem

    A solution is made by dissolving 0.584 mol of nonelectrolyte solute in 883 g of benzene. Calculate the freezing point and boiling point of the solution. Tf=? Tb=? I got Tf as 3.39 degrees Celsius I got Tb as 1.67 degrees Celsius

You can view more similar questions or ask a new question.