Results for “pH”
291 terms · page 2 of 13
Electrophilic Addition
A reaction in which an electrophile adds across a carbon–carbon multiple bond, converting a pi bond into two sigma bonds.
Organic ChemistryElectrophilic Substitution
A reaction in which an electrophile replaces a hydrogen atom on an aromatic ring.
Analytical Chemistry & SpectroscopyElectrophoresis
A separation technique in which charged species migrate through a medium under an applied electric field.
Analytical Chemistry & SpectroscopyGas Chromatography
A technique for separating volatile compounds carried by an inert gas through a heated column.
Analytical Chemistry & SpectroscopyGas Chromatography–Mass Spectrometry
A hybrid technique in which compounds separated by gas chromatography are identified by a mass spectrometer.
Analytical Chemistry & SpectroscopyHigh-Performance Liquid Chromatography
A technique in which a liquid mobile phase is pumped at high pressure through a column of very fine stationary phase.
States of Matter & Gas LawsIsomorphism
The property of two or more different substances crystallising in the same structural form.
Analytical Chemistry & SpectroscopyMobile Phase
The fluid that carries the sample through the stationary phase during chromatography.
Organic ChemistryNucleophile
An electron-rich species that donates a pair of electrons to form a new covalent bond.
Organic ChemistryNucleophilic Substitution
A reaction in which a nucleophile replaces a leaving group attached to a saturated carbon.
States of Matter & Gas LawsPolymorphism
The ability of a single substance to exist in more than one crystalline form.
Nuclear & RadiochemistryRadiopharmaceutical
A radioactive compound administered to a patient for diagnosis or treatment.
Analytical Chemistry & SpectroscopyStationary Phase
The fixed material in a chromatographic system with which the sample components interact as they pass.
Analytical Chemistry & SpectroscopyThin Layer Chromatography
A chromatographic technique using a thin layer of adsorbent coated on a flat plate.
Analytical Chemistry & SpectroscopyX-ray Crystallography
A technique that determines the three-dimensional atomic structure of a crystal from its X-ray diffraction pattern.
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 & 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.
Foundations of ChemistryAllotropy
The existence of an element in two or more distinct structural forms within the same physical state.
States of Matter & Gas LawsAnisotropy
The dependence of a physical property on the direction in which it is measured.
Acids, Bases & SaltsBasic Buffer
A buffer made from a weak base and one of its salts, giving a pH above 7.
Acids, Bases & SaltsBasic Salt
A salt whose aqueous solution has a pH above 7, or one that retains a hydroxide group.
Thermochemistry & ThermodynamicsBond Dissociation Enthalpy
The enthalpy change when one mole of a specific bond is broken homolytically in the gas phase.
Acids, Bases & SaltsBuffer Capacity
The amount of strong acid or base a buffer can absorb before its pH changes appreciably.