Definitions Flashcards
Lattice enthalpy
The enthalpy change when one mole of an ionic compound is converted to gaseous ions
Enthalpy of atomisation
The Enthalpy change when one mole of gaseous atoms is formed from the element in its standard state
First electron affinity
The Enthalpy change when one mole of gaseous atoms is converted into gaseous ions with a single negative charge
Enthalpy or solution
The Enthalpy change when one mole of a solute dissolves in water
Enthalpy of hydration
The Enthalpy change when one mole of gaseous ions is converted to one mole of aqueous ions
Feasible
A reaction for which ΔG < 0
Entropy
A measure of disorder (randomness)
Free energy change (ΔG)
ΔG= ΔH-TΔS
Rate of reaction
The change of the concentration (amount) of a reactant or product with respect to time
Order of reaction (with respect to a reactant)
The power to which the concentration of a reactant is raised in the rate equation
Order of reaction (overall)
The sum of the powers to which the concentration terms are raised in the rate equation
Rate constant
The proportionality constant which links the rate of the reaction to the concentrations in the rate equation
Rate determining step
The slowest step in the mechanism of a reaction
Brønsted acid
Proton donor
Brønsted base
Proton acceptor
