Results for “Mole”
21 terms
Effusion
The escape of gas molecules one at a time through a hole much smaller than the mean free path.
Atomic Structure & PeriodicityElectron Affinity
The energy change when one mole of gaseous atoms each gains an electron to form gaseous negative ions.
Thermochemistry & ThermodynamicsEnthalpy of Atomisation
The enthalpy change when one mole of gaseous atoms is produced from an element in its standard state.
Thermochemistry & ThermodynamicsEnthalpy of Fusion
The enthalpy change when one mole of a solid melts to a liquid at its melting point.
Thermochemistry & ThermodynamicsEnthalpy of Neutralisation
The enthalpy change when an acid and a base react to form one mole of water under standard conditions.
Solutions & Colligative PropertiesEnthalpy of Solution
The heat absorbed or released when one mole of a substance dissolves completely in a large excess of solvent.
Thermochemistry & ThermodynamicsEnthalpy of Sublimation
The enthalpy change when one mole of a solid converts directly into vapour.
Thermochemistry & ThermodynamicsEnthalpy of Vaporisation
The enthalpy change when one mole of a liquid becomes vapour at its boiling point.
Chemical Kinetics & CatalysisEnzyme Catalysis
Catalysis by protein molecules that bind substrates at a specific active site and lower the activation energy dramatically.
Stoichiometry & Chemical ReactionsEquivalent Weight
The mass of a substance that combines with or displaces 1.008 g of hydrogen, 8 g of oxygen or one mole of electrons.
States of Matter & Gas LawsEvaporation
The escape of molecules from the surface of a liquid into the vapour phase below the boiling point.
Chemical EquilibriumEffect of an Inert Gas
The influence of adding a non-reacting gas on the position of a gaseous equilibrium.
Chemical EquilibriumEffect of Pressure Change
The shift in a gaseous equilibrium caused by changing the total pressure through a volume change.
Chemical Bonding & Molecular StructureElectron Domain Geometry
The spatial arrangement of all electron domains — bonding and lone pairs alike — around a central atom.
Organic ChemistryElectrophile
An electron-deficient species that seeks and accepts a pair of electrons from an electron-rich centre.
Analytical Chemistry & SpectroscopyElectrophoresis
A separation technique in which charged species migrate through a medium under an applied electric field.
Chemical Kinetics & CatalysisElementary Reaction
A reaction that occurs in a single step exactly as written, with no detectable intermediate.
Foundations of ChemistryEmpirical Formula
The chemical formula giving the simplest whole-number ratio of atoms of each element in a compound.
Thermochemistry & ThermodynamicsEntropy
A measure of the dispersal of energy and the number of microscopic arrangements available to a system.
Thermochemistry & ThermodynamicsEnthalpy of Reaction
The heat absorbed or released when a reaction occurs at constant pressure in the molar amounts of the balanced equation.
Foundations of ChemistryExtensive Property
A property whose value is directly proportional to the quantity of matter in the sample.