# 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