Home Wikituition Browse all terms Categories
Random term

Results for “Enthalpy”

37 terms · page 2 of 2

A–Z
All A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Filtering by: Enthalpy Clear all
Chemical Kinetics & Catalysis

Energy Profile Diagram

A plot of potential energy against reaction coordinate showing reactants, transition states, intermediates and products.

kJ/mol Thermochemistry & Thermodynamics

Gibbs–Helmholtz Equation

The relation showing how the Gibbs free energy of a system varies with temperature.

(∂(ΔG/T)/∂T)_p = −ΔH/T² kJ/mol Thermochemistry & Thermodynamics

Isobaric Process

A process carried out at constant pressure.

q_p = ΔH J Stoichiometry & Chemical Reactions

Neutralisation Reaction

The reaction between an acid and a base to produce a salt and water.

HA + BOH → BA + H₂O kJ/mol Solutions & Colligative Properties

Non-Ideal Solution

A solution that departs from Raoult's law because interactions between unlike molecules differ from those between like molecules.

p ≠ x p° Pa Chemical Bonding & Molecular Structure

Resonance Energy

The extra stability a molecule gains from electron delocalisation, measured against the most stable single Lewis structure.

ΔE_res = E(hybrid) − E(best structure) kJ/mol Thermochemistry & Thermodynamics

Spontaneity

The tendency of a process to occur without any continuous external input of energy.

ΔG < 0 kJ/mol Stoichiometry & Chemical Reactions

Stoichiometric Coefficient

The number written before a formula in a balanced equation, giving the relative amount of that substance consumed or produced.

Dimensionless Solutions & Colligative Properties

Supersaturated Solution

An unstable solution containing more dissolved solute than the equilibrium solubility at that temperature.

mol/L Chemical Kinetics & Catalysis

Transition State Theory

The theory that treats the activated complex as being in quasi-equilibrium with reactants and calculates rate from its decomposition…

k = (k_BT/h) e^(−ΔG‡/RT) Various Chemical Equilibrium

Van't Hoff Equation

The equation describing how an equilibrium constant varies with temperature.

ln(K₂/K₁) = −ΔH°/R (1/T₂ − 1/T₁) kJ/mol Foundations of Chemistry

Extensive Property

A property whose value is directly proportional to the quantity of matter in the sample.

Various Thermochemistry & Thermodynamics

State Function

A property whose value depends only on the current state of the system, not on how that state was reached.

ΔX = X_final − X_initial Various