Ch5 Chemical Energetics: Thermochemistry And Thermodynamics Flashcards
The fkin title
State the standard enthalpy change of formation
The standard enthalpy change of formation, ∆Hfø, is the enthalpy change when 1 mole of a substance is formed from its constituent elements in their standard states at 1 bar, at a specified temperature, usually 298K
State the standard enthalpy change of neutralisation
The standard enthalpy change of neutralisation, ∆Høneut, is the energy released when 1 mole of water is formed in the neutralisation reaction between an acid and a base, at 1 bar, at a specified temperature, usually 298K
State the standard enthalpy change of neutralisation
The standard enthalpy change of neutralisation, ∆Høneut, is the energy released when 1 mole of water is formed in the neutralisation reaction between an acid and a base, at 1 bar, at a specified temperature, usually 298K
State bond energy
Bond energy is the average energy required to break 1 mole of a covalent bond between two atoms in the gaseous state
State bond dissociation energy
Bond dissociation energy is the energy required to break 1 mole of a particular covalent bond in a specific molecule in the gaseous state.
State Hess’s Law
Hess’s Law states that the enthalpy change (∆H) of a reaction is determined only by the initial and final states and is independent of the reaction pathway taken
State the standard enthalpy change of atomisation
The standard enthalpy change of atomisation, ∆Hatø, for an element is the energy required to form (1 mole of )gaseous atoms from the element(1 mole of the compound) in its standard state at 1 bar, at a specified temperature, usually 298K
State lattice energy
Lattice energy of an ionic compound is the energy released when 1 mole of solid ionic compound is formed from its constituent gaseous ions
State lattice energy
Lattice energy of an ionic compound is the energy released when 1 mole of solid ionic compound is formed from its constituent gaseous ions
State Xth ionisation energy
The Xth ionisation energy is the energy required to remove 1 mole of electrons from 1 mole of [gaseous atoms]/[singly charged gaseous cations] to form 1 mole of [singly]/[doubly] charged gaseous cations
State Xth electron affinity
The Xth electron affinity is the enthalpy change when 1 mole of electrons is added to 1 mole of [singly charged gaseous anions]/[gaseous atoms] to form 1 mole of [doubly]/[singly] charged gaseous anions
State standard enthalpy change of hydration
The standard enthalpy change of hydration, ∆Høhyd, of an ion is the heat evolved when 1 mole of free gaseous ions is hydrated at 1 bar at a specified temperature, usually 298K
State standard enthalpy change of solution
The standard enthalpy change of solution, ∆Høsol, of a substance is the enthalpy change when 1 mole of substance is completely dissolved in an infinite volume of solvent at 1 bar at a specified temperature, usually 298K
State standard enthalpy change of fusion/vaporisation
No ans given lol
