basic

Molar Solubility from K_sp Calculator

s from K_sp for AB, AB₂, A₂B and AB₃ salts.

Compute the molar solubility s of a sparingly-soluble ionic salt from its solubility-product K_sp. Choose the dissolution stoichiometry (1:1 AB, 1:2 AB₂, 2:1 A₂B, or 1:3 AB₃) — the corresponding closed-form root is applied automatically.

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

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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

AB: s = √K_sp; AB₂ or A₂B: s = (K_sp / 4)^(1/3); AB₃: s = (K_sp / 27)^(1/4).

In depth

Compute the molar solubility s of a sparingly-soluble ionic salt from its solubility-product K_sp. Choose the dissolution stoichiometry (1:1 AB, 1:2 AB₂, 2:1 A₂B, or 1:3 AB₃) — the corresponding closed-form root is applied automatically.