Use this chemistry calculator to reproduce a named relationship with explicit quantities and units for study, laboratory planning, or an independent numerical check.

Molarity (mol/L)

Required number input.

Temperature (K)

Required number input.

van 't Hoff factor

Optional integer input.

Compute osmotic pressure from molarity, temperature, and the van 't Hoff factor. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Osmotic pressure (atm)

The resulting osmotic pressure returned as a number.

• Osmotic relationships depend on particle count, concentration basis, temperature, dissociation, membrane selectivity, and solution non-ideality. Osmolality and osmolarity are not interchangeable without density information.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check units and significant figures, compare the result with limiting cases, and use measured or source-specific constants where available. Laboratory, safety, and regulatory decisions require validated methods and appropriate uncertainty analysis.

• Osmolarity Calculator

  Compute solution osmolarity as the van't Hoff factor times molarity.

• Boiling Point Elevation

  Estimate boiling point elevation from molality, the ebullioscopic constant, and the van 't Hoff factor.

• Degree of Dissociation Calculator

  Solve the degree of dissociation from an observed van't Hoff factor as α = (i−1)/(n−1).