Mole fraction of solute from molality (binary) (x_solute = m M_solvent / (1000 + m M_solvent) with m in mol/kg and M1 = molar mass of)
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x_solute = m M_solvent / (1000 + m M_solvent) with m in mol/kg and M1 = molar mass of solvent in g/mol
What each symbol means
| Symbol | What it stands for |
|---|---|
| m | Molality (mol kg⁻¹) |
| M_1 | Molar mass of solvent (g mol⁻¹); for water M_1 = 18 |
| x_2 | Mole fraction of solute (dimensionless) |
When to use this
Binary solution; solvent is component 1; derived from n_2 = m kg_solvent and n_1 = 1000/M_1 per kg solvent.