Acids, Bases & Salts
11 terms
Acid
A substance that donates protons, produces hydrogen ions in water, or accepts a pair of electrons.
Acids, Bases & SaltsAcid Dissociation Constant
The equilibrium constant for the ionisation of an acid in water, measuring its strength.
Acids, Bases & SaltsAcid Strength and Molecular Structure
The structural factors that determine how readily a molecule releases a proton.
Acids, Bases & SaltsAcidic Buffer
A buffer made from a weak acid and one of its salts, giving a pH below 7.
Acids, Bases & SaltsAcidic Salt
A salt whose aqueous solution has a pH below 7, or one that still contains replaceable hydrogen.
Acids, Bases & SaltsAcidic Solution
A solution in which the hydrogen ion concentration exceeds the hydroxide ion concentration.
Acids, Bases & SaltsAcid–Base Indicator
A weak acid or base whose conjugate forms have distinctly different colours, used to signal the end point of a titration.
Acids, Bases & SaltsAcid–Base Titration
A titration in which an acid is neutralised by a base, or the reverse, monitored by an indicator or a pH meter.
Acids, Bases & SaltsAmphiprotic Species
A species that can both donate and accept a proton.
Acids, Bases & SaltsAmphoteric Substance
A substance able to react as either an acid or a base depending on what it meets.
Acids, Bases & SaltsArrhenius Theory
The theory defining an acid as a substance that produces H⁺ ions in water and a base as one that produces OH⁻ ions.