What is the formula for calculating the depression of freezing point?

What is the formula for calculating the depression of freezing point?

Step 1: Understand that the depression of freezing point is how much the freezing point of a solution is lowered compared to the pure solvent.
Step 2: Learn the formula: ΔTf = Kf * m.
Step 3: Identify the variables in the formula: ΔTf is the change in freezing point, Kf is a constant specific to the solvent, and m is the molality of the solution.
Step 4: Find the value of Kf for the solvent you are using (this is usually provided in tables).
Step 5: Calculate the molality (m) of your solution, which is the number of moles of solute divided by the mass of solvent in kilograms.
Step 6: Multiply Kf by the molality (m) to find ΔTf, the depression of the freezing point.

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