📌 What is this Calculator Used For?

This tool calculates the decrease in freezing point of a solution due to the addition of solute particles — a key concept in colligative properties in chemistry.

🧪 How to Use:

• Enter the cryoscopic constant (K_f) of the solvent.
• Enter the molality of the solution.
• Enter the Van’t Hoff factor for the solute.
• The result will auto-update showing the freezing point depression (ΔTf).

📐 Formula:

ΔTf = i × K_f × m

• ΔTf = freezing point depression (°C)
• i = Van’t Hoff factor
• K_f = cryoscopic constant (°C·kg/mol)
• m = molality (mol/kg)

✅ Example:

Suppose K_f = 1.86 °C·kg/mol, m = 0.5 mol/kg, and i = 2 (for NaCl).
ΔTf = 2 × 1.86 × 0.5 = 1.86°C