basic

Multistage Solvent-Extraction Residue Calculator

fraction_remaining = (V_aq / (V_aq + K·V_org))^n.

Compute the fraction of solute remaining in the aqueous phase after n batchwise extractions with a fresh portion of organic solvent each time, given the partition coefficient K = c_org / c_aq, the volume of the aqueous solution, and the volume of organic solvent used per stage. Many small extractions remove more than one big extraction.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

mL
mL

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

fr_remaining = (V_aq / (V_aq + K · V_org))^n.

In depth

Compute the fraction of solute remaining in the aqueous phase after n batchwise extractions with a fresh portion of organic solvent each time, given the partition coefficient K = c_org / c_aq, the volume of the aqueous solution, and the volume of organic solvent used per stage. Many small extractions remove more than one big extraction.