Molality

molality is defined as ________________________

• the moles of solute per kilogram of solvent

• moles of solute per liter of solution

• mass of solute/ mass of solution

• mass of solute/ mass of solvent X 100

What is the molality of a solution in which 3.0 moles of NaCl is dissolved in 1.5 Kg of water?

• 2.0 M

• 0.22 m

• 135 m

• 2.0m

Molality (m) = moles of solute / _________________________.

• kilogram of solvent

• kiloliter of solvent

• kilometer of solvent

• ounces of solvent

What is the molality of a solution made by dissolving 2 moles of NaOH in 400 grams of water?

• 5 mol/kg. solvent

• 4 mol/kg solvent

• 3 mol/kg. solvent

• 2.5 moles /kg solvent

A solution contains 8 moles of solute and the mass of the solvent is 4 kg. What’s the molality of this solution?

• 
  5 mol/kg
  
  

• 8 mol/kg

• 2 mol/kg

• 4 mol/kg

What is the molality of a solution formed by dissolving 1.2 moles of a solute in 0.800 kg of solvent?

• 1.5 m

• 0.67 m

• 0.96 m

3 moles KI in 0.500kg of H2O equals what molality?

Mathematical Equivalence

ON

What is the molality of 0.3 mol NaCl in 200g of H20?

Mathematical Equivalence

ON

Which equation is used to find molality?

• Moles solute/L solution

• Moles solute/kg solution

• Moles solute/kg solvent

• Grams solute/L solution

What are the units of molality?

• M

• m

• Ml

• Mr