Chem

posted by .

A solution of lithium chloride in water has a mole fraction of 0.0500 in LiCl. What is the molality?

Mole fraction = moles of LiCl over total moles of solution

Molality=moles of LiCl per kg of solvent

How do I link this information?

  • Chem -

    Assume you have 1.00 mol solution.
    That means you have 0.05 mols LiCl and 0.95 mols H2O.
    0.95 mol H2O x (18.015 g H2O/1 mol H2O) = 17.11 grams H2O.
    So molality = mols/kg solvent=
    0.05 mols LiCl/0.01711 kg solvent = xx molal.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    An aqueous solution contains 2.0 % NaCl by mass. (1) Calculate the molality (NOT molarity!) of the solution. (2) Calculate the mole fraction of the solution. I know how to solve both but the problem is missing one other compound/element. …
  2. General chemistry

    A solution of LiCl in water is 18.0 wt% LiCl. What is the mole fraction of LiCl?
  3. Chemistry

    A 4.50 g sample of LiCl at 250 C dissolves in 25.0 ml of water also at 25.0 C.?
  4. chemistry help

    a 4.50 sample of LiCl at 25.0*C dissolves in 25.0 mL of water also at 25.0*C. The final equilibrium temperature of resulting solution is 60.8*C. What is the enthalpy of solution, of LiCL expressed in kilojoules per mole?
  5. chemistry help

    a 4.50 sample of LiCl at 25.0*C dissolves in 25.0 mL of water also at 25.0*C. The final equilibrium temperature of resulting solution is 60.8*C. What is the enthalpy of solution, of LiCL expressed in kilojoules per mole?
  6. chemistry

    What is the volume, in mL of .089 m lithium chloride (LiCl) solution containing 4.3g of LiCl?
  7. chemistry is this answer right

    115 grams of KCl is dissolved in 750 ml of water. what are the molality, molarity, mole percent, % mass, ppm by mass. what would the freezing point and boiling point of that solution assuming Kf of water is 1.86 degree celsius/m and …
  8. Chemistry

    An aqueous solution is 8.50% ammonium chloride, NH4Cl, by mass. The density of the solution is 1.024g/mL. Calculate the molality, mole fraction, and molarity of NH4Cl in the solution. I know the formulas needed but I'm not sure where …
  9. chemistry

    According to the reaction below, how many grams of lithium oxide could be produced from 3.1 moles LiCl?
  10. Chem 3

    Prepared by disolving 60g CaBr2 280g H2O the final volume of tje solution is 300ml. Calculate the mole of the solution, normality ,weight % of CaBr2,molality ,moles of fraction of CaBr2 ,moles fraction of H2O

More Similar Questions