Chemistry

posted by .

The boiling point of an aqueous solution is 102.48 °C. What is the freezing point?
I know that formula for freezing point is delta Tf = Kf*m but what do I plug in for each?

  • Chemistry -

    delta T = Kb*m
    Substitute and solve for m

    Then plug m and Kf into your delta T = Kf*m formula and solve for delta T, then freezing point.

  • Chemistry -

    Is the freezing point 372 degree C?
    Kb = 0.512
    Kf = 1.86

  • Chemistry -

    When you do this you should show your work. I can tell at a glance where your trouble is.
    For boiling point data:
    delta T =Kb*m
    (102.48-100) = 0.512*m
    m = about 4.84m

    Then delta T = Kf*m
    dT = 1.86*4.84
    dT = about9.00 = about 9.00 degrees lower than the normal freezing point.
    0-9.00 = -9.00 C.

  • Chemistry -

    7.62 'C

    2.1/0.512=4.10
    4.10*1.86=7.62

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. chemistry

    The freezing point of a 0.010 m aqueous solution of a nonvolatile solute is ?
  2. Chemistry

    What Occurs as a salt dissolves in water?
  3. Chemistry problem

    What is the expected freezing point of a 3.50 m aqueous solution of BaCl2 (Kfp=1.86C/m)?
  4. Chemistry

    Calculate the boiling points of freezing points of the following solutions in water. a) boiling point of a 2.25m solution of propylene glycol (a non-electrolyte) b)freezing point of a 1.0m solution of potassium iodide c)freezing point …
  5. Physical Chemistry

    When 1.33 g of a nonpolar solute was dissolved in 50.0 g of phenol, the latter's freezing point was lowered by 1.454°C. Calculate the molar mass of the solute. The kf of phenol is 7.27 (K·kg)/mol. What is the normal boiling point …
  6. chemistry

    The boiling point of an aqueous solution is elevated by 0.15 degrees celcius. the change in freezing point of the solution, delta T, is?
  7. Chemistry

    The boiling point of an aqueous solution is 102.35 °C. What is the freezing point?
  8. chemistry

    What is the expected freezing point of a 3.50 m (m standing for molality)aqueous solution of BaCl2(Kfp= 1.86 degrees Celsius/m)?
  9. chemistry

    Which of the following statements about boiling points are true?
  10. Chemistry

    The equation for lowering the freezing point of a solvent is given in your manual. Given that the freezing point for the pure solvent is 79.4 °C , the molality is 0.1 m , and the freezing point depression constant is 6.9 °C/m , determine …

More Similar Questions