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ion product

chemical equation

Also known as: autoprotolysis constant

Learn about this topic in these articles:

acid-base equilibrium calculations

In acid–base reaction: Acid–base equilibria
…equation, K_s is termed the ion product or the autoprotolysis constant of the solvent. The concentrations are usually expressed in moles per litre, a mole being the molecular weight of the compound in grams. Since a solvent that is a good proton donor is normally a poor proton acceptor, and…
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aqueous solutions

In acid–base reaction: Aqueous solutions
The ion product of water, K_w = [H₃O⁺] [OH⁻], has the value 1.0 × 10⁻¹⁴ mole²litre⁻² at 25 °C, but it is strongly temperature-dependent, becoming 1.0 × 10⁻¹⁵ at 0 °C and 7 × 10⁻¹³ at 100 °C. In principle the value of K_w can be…
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