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CHEMISTRY / COLLIGATIVE PROPERTIES

Molar Mass from Boiling Point Elevation Calculator

Estimate solute molar mass from measured boiling-point elevation. Review the equation, substituted values, assumptions, and result in one guided chemistry workspace.

  • 01 Calculated in this tab
  • 02 Values stay in this browser tab
  • 03 Use boundary

Conversion input

Known value

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Equation inputs

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Use boundary

Calculation path

Estimate solute molar mass from measured boiling-point elevation. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.

Calculation path

M=iK_b m_solute/(Delta T_b m_solvent)

What you provide

What you provide

  • Solute mass expressed in g, using the same scenario as the other inputs
  • Van t Hoff factor, using the same scenario as the other inputs
  • Boiling-point constant expressed in K kg/mol, using the same scenario as the other inputs
  • Solvent mass expressed in kg, using the same scenario as the other inputs
  • Boiling-point elevation expressed in K, using the same scenario as the other inputs

What you receive

What you receive

  • Estimated molar mass in g/mol from the stated equation
  • A symbolic formula plus substituted working with your values
  • Visible assumptions, field guidance, and an authoritative learning reference

Use boundary

Choose the maximum decimal places shown. This does not increase source accuracy.

The solution is dilute and ideal, solute is nonvolatile, and phase-change data use consistent units.

Use internally consistent units and retain extra precision when carrying the result into another calculation.

Reviewed reference factors

Reviewed reference factors

OpenStax Chemistry 2e

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