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Boiling Point Elevation Calculator

Chemistry
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Calculates the boiling point elevation of a solution using the ebullioscopic constant, molality, and van't Hoff factor.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Ebullioscopic Constant (Kb), Molality of Solution (m), and van't Hoff Factor (i) in the units shown.

Step 2

Read Boiling Point Elevation (ΔTb) in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

Water + Glucose (non-ionic)

Ebullioscopic Constant (Kb): 0.512 °C kg/mol; Molality of Solution (m): 0.5 mol/kg; van't Hoff Factor (i): 1

Boiling Point Elevation (ΔTb): 0.256 °C

Water + NaCl (fully dissociates)

Ebullioscopic Constant (Kb): 0.512 °C kg/mol; Molality of Solution (m): 0.1 mol/kg; van't Hoff Factor (i): 2

Boiling Point Elevation (ΔTb): 0.1024 °C

Benzene + Anthracene

Ebullioscopic Constant (Kb): 2.53 °C kg/mol; Molality of Solution (m): 0.2 mol/kg; van't Hoff Factor (i): 1

Boiling Point Elevation (ΔTb): 0.506 °C

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