Results for “pH”
17 terms
High-Performance Liquid Chromatography
A technique in which a liquid mobile phase is pumped at high pressure through a column of very fine stationary phase.
Acids, Bases & SaltsHenderson–Hasselbalch Equation
The equation giving the pH of a buffer from the pKa of its acid and the ratio of conjugate base to acid.
Chemical Kinetics & CatalysisHeterogeneous Catalysis
Catalysis in which the catalyst is in a different phase from the reactants, usually a solid with gaseous or liquid reagents.
Chemical EquilibriumHeterogeneous Equilibrium
An equilibrium involving species present in more than one phase.
Foundations of ChemistryHeterogeneous Mixture
A mixture in which the components remain physically distinct, so composition varies from one region of the sample to another.
States of Matter & Gas LawsHexagonal Close Packing
A close-packed arrangement in which layers of spheres repeat in an ABAB sequence.
Chemical Kinetics & CatalysisHomogeneous Catalysis
Catalysis in which the catalyst is in the same phase as the reactants.
Chemical EquilibriumHomogeneous Equilibrium
An equilibrium in which all the reacting species are present in the same phase.
Inorganic & Coordination ChemistryHydrate Isomerism
Isomerism arising from water molecules occupying either the coordination sphere or lattice positions outside it.
Organic ChemistryHaloalkane
An alkane in which one or more hydrogen atoms have been replaced by halogen atoms.
Atomic Structure & PeriodicityHalogens
The group 17 elements — fluorine through astatine — which are one electron short of a full outer shell.
Chemical Bonding & Molecular StructureHOMO and LUMO
The highest occupied and lowest unoccupied molecular orbitals, which together govern a molecule's reactivity and spectroscopy.
Foundations of ChemistryHomogeneous Mixture
A mixture whose composition and properties are uniform throughout, with no visible boundary between the components.
Organic ChemistryHomologous Series
A family of compounds sharing the same functional group and general formula, with successive members differing by CH₂.
Organic ChemistryHydrocarbon
A compound composed exclusively of carbon and hydrogen.
Organic ChemistryHyperconjugation
The stabilising delocalisation of electrons from a sigma C–H bond into an adjacent empty or partly filled p orbital.
Stoichiometry & Chemical ReactionsHydration Reaction
The addition of water across a multiple bond or the incorporation of water into a crystal lattice.