Search results for “Mole”

Degree of Ionisation Acids, Bases & Salts Dimensionless The fraction of dissolved electrolyte molecules that have broken into ions at equilibrium. α = ionised / total

Dehydration Reaction Stoichiometry & Chemical Reactions Dimensionless A reaction in which water is removed from a single molecule, generally producing an unsaturated or condensed product. R–CH₂–CH₂OH → R–CH=CH₂ + H₂O

Diffusion States of Matter & Gas Laws m²/s The spontaneous spreading of one substance through another as a result of random molecular motion. J = −D (dc/dx)

Dipole Moment Chemical Bonding & Molecular Structure D The vector measure of the separation of positive and negative charge in a bond or molecule. μ = q × d

Dipole–Dipole Interaction Chemical Bonding & Molecular Structure kJ/mol The electrostatic attraction between the positive end of one polar molecule and the negative end of another. E ∝ μ₁μ₂ / r³

Diprotic Acid Acids, Bases & Salts mol/L An acid that can donate two protons per molecule. H₂A ⇌ 2H⁺ + A²⁻

Dynamic Equilibrium Chemical Equilibrium Dimensionless An equilibrium in which opposing processes continue at the molecular level but at equal and opposite rates. rate_forward = rate_reverse

Dalton's Law of Partial Pressures States of Matter & Gas Laws Pa 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 …

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

Dilution Solutions & Colligative Properties mol/L The process of reducing a solution's concentration by adding more solvent, leaving the amount of solute unchanged. M₁V₁ = M₂V₂

Disaccharide Biochemistry & Polymer Chemistry Dimensionless A carbohydrate formed when two monosaccharide units join through a glycosidic bond. C₁₂H₂₂O₁₁

Distribution Law Chemical Equilibrium Dimensionless The principle that a solute distributes itself between two immiscible solvents in a constant ratio at fixed temperature. K_D = C_organic / C_aqueous

Degree of Polymerisation Biochemistry & Polymer Chemistry Dimensionless The number of monomer units in an average polymer chain. DP = M_polymer / M_monomer

Dimensional Analysis Foundations of Chemistry Various A calculation method that tracks and cancels units through a chain of conversion factors to reach the required quantity. given quantity × (desired unit / given unit) = answer

Results for “Mole”