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Results for “Mole”

256 terms · page 8 of 11


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States of Matter & Gas Laws

Critical Temperature

The temperature above which a gas cannot be liquefied by pressure alone, however great.

T_c = 8a / 27Rb K
States of Matter & Gas Laws

Dalton's Law of Partial Pressures

The total pressure of a gas mixture equals the sum of the pressures each component would exert alone in the same volume.

p_total = p₁ + p₂ + p₃ … Pa
Organic Chemistry

Diastereomer

A stereoisomer that is not a mirror image of the compound with which it is compared.

Dimensionless
Solutions & Colligative Properties

Dilution

The process of reducing a solution's concentration by adding more solvent, leaving the amount of solute unchanged.

M₁V₁ = M₂V₂ mol/L
Biochemistry & Polymer Chemistry

Disaccharide

A carbohydrate formed when two monosaccharide units join through a glycosidic bond.

C₁₂H₂₂O₁₁ Dimensionless
Chemical Equilibrium

Distribution Law

The principle that a solute distributes itself between two immiscible solvents in a constant ratio at fixed temperature.

K_D = C_organic / C_aqueous Dimensionless
Chemical Equilibrium

Effect of an Inert Gas

The influence of adding a non-reacting gas on the position of a gaseous equilibrium.

Pa
Chemical Equilibrium

Effect of Pressure Change

The shift in a gaseous equilibrium caused by changing the total pressure through a volume change.

shift towards fewer gas moles when p rises Pa
Chemical Bonding & Molecular Structure

Electron Domain Geometry

The spatial arrangement of all electron domains — bonding and lone pairs alike — around a central atom.

degrees
Organic Chemistry

Electrophile

An electron-deficient species that seeks and accepts a pair of electrons from an electron-rich centre.

E⁺ Dimensionless
Analytical Chemistry & Spectroscopy

Electrophoresis

A separation technique in which charged species migrate through a medium under an applied electric field.

v = μE cm/s
Chemical Kinetics & Catalysis

Elementary Reaction

A reaction that occurs in a single step exactly as written, with no detectable intermediate.

order = molecularity Dimensionless
Foundations of Chemistry

Empirical Formula

The chemical formula giving the simplest whole-number ratio of atoms of each element in a compound.

ratio = (mass % ÷ A_r), normalised Dimensionless
Thermochemistry & Thermodynamics

Entropy

A measure of the dispersal of energy and the number of microscopic arrangements available to a system.

S = k ln W J/(mol·K)
Foundations of Chemistry

Formula Unit

The simplest whole-number ratio of ions represented in the empirical formula of an ionic or network compound.

Dimensionless
Organic Chemistry

Functional Group Isomerism

Structural isomerism in which compounds of the same formula contain entirely different functional groups.

Dimensionless
States of Matter & Gas Laws

Gaseous State

The state of matter in which particles are widely separated and move randomly at high speed, filling any container completely.

pV = nRT Dimensionless
Stoichiometry & Chemical Reactions

Gay-Lussac's Law of Combining Volumes

The principle that gases react in volume ratios that are simple whole numbers, when measured at the same temperature and pressure.

V_A : V_B = a : b L
States of Matter & Gas Laws

Gay-Lussac's Pressure Law

At constant volume, the pressure of a fixed mass of gas is directly proportional to its absolute temperature.

p₁ / T₁ = p₂ / T₂ Pa/K
Biochemistry & Polymer Chemistry

Glucose

The most abundant monosaccharide and the primary energy source for most living cells.

C₆H₁₂O₆ g/mol
States of Matter & Gas Laws

Graham's Law of Diffusion

The rate at which a gas diffuses or effuses is inversely proportional to the square root of its molar mass.

r₁ / r₂ = √(M₂ / M₁) Dimensionless
Atomic Structure & Periodicity

Halogens

The group 17 elements — fluorine through astatine — which are one electron short of a full outer shell.

ns² np⁵ Dimensionless
Thermochemistry & Thermodynamics

Heat Capacity at Constant Volume

The heat needed to raise a system's temperature by one kelvin while its volume is held fixed.

C_V = (∂U/∂T)_V J/(mol·K)
Chemical Kinetics & Catalysis

Homogeneous Catalysis

Catalysis in which the catalyst is in the same phase as the reactants.

Dimensionless