molality and molarity

What is molality?

Molality is a measure of concentration defined as the number of moles of solute per kilogram of solvent.

How is molarity defined?

Molarity is defined as the number of moles of solute per liter of solution.

What is the formula for calculating molality?

The formula for molality (m) is: m = moles of solute / mass of solvent (kg).

What is the formula for calculating molarity?

The formula for molarity (M) is: M = moles of solute / volume of solution (L).

In what unit is molality expressed?

Molality is expressed in moles per kilogram (mol/kg).

In what unit is molarity expressed?

Molarity is expressed in moles per liter (mol/L).

What is the primary difference between molality and molarity?

The primary difference is that molality is based on the mass of the solvent, while molarity is based on the volume of the solution.

Is molality affected by temperature changes?

No, molality is not significantly affected by temperature changes because it relies on the mass of the solvent.

Is molarity affected by temperature changes?

Yes, molarity can change with temperature because it depends on the volume of the solution, which can expand or contract.

When would you use molality instead of molarity?

You would use molality in situations where temperature changes significantly affect volume, such as in colligative property calculations.