Results for “Mole”
26 terms · page 1 of 2
Self-Ionisation of Water
The reaction in which two water molecules transfer a proton to give a hydronium and a hydroxide ion.
Solutions & Colligative PropertiesSemipermeable Membrane
A barrier that allows solvent molecules to pass while blocking larger solute particles.
Solutions & Colligative PropertiesSolution
A homogeneous mixture in which one or more substances are dispersed uniformly at the molecular or ionic level in another.
Solutions & Colligative PropertiesSolvation
The surrounding and stabilisation of a solute particle by a shell of solvent molecules.
Thermochemistry & ThermodynamicsStandard Enthalpy of Combustion
The enthalpy change when one mole of a substance burns completely in excess oxygen under standard conditions.
Thermochemistry & ThermodynamicsStandard Enthalpy of Formation
The enthalpy change when one mole of a compound forms from its elements in their standard states.
Thermochemistry & ThermodynamicsStandard Molar Entropy
The absolute entropy of one mole of a substance in its standard state at 298 K.
Organic ChemistryStereoisomerism
Isomerism in which molecules have identical connectivity but differ in the spatial arrangement of their atoms.
Stoichiometry & Chemical ReactionsStoichiometry
The quantitative study of the mass and mole relationships between reactants and products in a chemical reaction.
Foundations of ChemistryStructural Formula
A representation showing how the atoms in a molecule are connected and, often, how they are arranged in space.
Stoichiometry & Chemical ReactionsSubstitution Reaction
A reaction in which one atom or group in a molecule is replaced by another.
States of Matter & Gas LawsSurface Tension
The energy required to increase the surface area of a liquid by unit amount, arising from unbalanced intermolecular forces at the surface.
Organic ChemistrySaturation and Unsaturation
The distinction between compounds containing only single bonds and those containing multiple bonds or rings.
Atomic Structure & PeriodicitySchrödinger Wave Equation
The fundamental equation of quantum mechanics whose solutions give the allowed energies and wavefunctions of a system.
Chemical Kinetics & CatalysisSecond-Order Reaction
A reaction whose rate depends on the square of one concentration or on the product of two concentrations.
Inorganic & Coordination ChemistrySecondary Valence
In Werner's theory, the non-ionisable valence corresponding to the coordination number, satisfied by ligands in fixed spatial positions.
Chemical Kinetics & CatalysisSelectivity
The ability of a catalyst to direct a reaction towards one particular product among several possible ones.
Foundations of ChemistrySI Base Units
The seven defined units of the International System from which every other measurement unit is derived.
States of Matter & Gas LawsSolid State
The state of matter in which particles are held in fixed positions, giving a definite shape and volume.
Solutions & Colligative PropertiesSolubility of Gases
The amount of a gas that dissolves in a given volume of liquid at a stated temperature and partial pressure.
Solutions & Colligative PropertiesSolvent
The component of a solution present in the greater amount, which dissolves and disperses the solute.
Thermochemistry & ThermodynamicsSpecific Heat Capacity
The heat required to raise the temperature of one kilogram of a substance by one kelvin.
Chemical Bonding & Molecular Structuresp³ Hybridisation
The mixing of one s and three p orbitals to give four hybrid orbitals directed towards the corners of a tetrahedron.
Chemical Kinetics & CatalysisSteric Factor
The fraction of sufficiently energetic collisions that also have the correct spatial orientation for reaction.