Born-Haber cycle

Front

What is the Born-Haber cycle?

Back

A thermodynamic cycle that relates the lattice enthalpy of an ionic compound to its formation from gaseous ions.

Front

Define lattice enthalpy.

Back

The enthalpy change when one mole of an ionic lattice is formed from gaseous ions.

Front

What is the enthalpy of formation?

Back

The enthalpy change that occurs when one mole of a compound is formed from its elements in their standard states under standard conditions.

Front

What does a higher lattice enthalpy indicate about an ionic compound?

Back

It indicates stronger ionic bonds and greater stability of the ionic lattice.

Front

What is the significance of ionization energy in the Born-Haber cycle?

Back

Ionization energy is the energy required to remove an electron from an atom, contributing to the formation of cations in the cycle.

Front

How does electron affinity relate to the Born-Haber cycle?

Back

Electron affinity is the energy change when an electron is added to an atom, contributing to the formation of anions in the cycle.

Front

What is the difference between the first and second ionization energies?

Back

The first ionization energy is the energy required to remove the first electron, while the second ionization energy is the energy required to remove a second electron from a cation.

Front

What is the role of enthalpy of atomization in the Born-Haber cycle?

Back

It is the energy required to convert one mole of a substance into gaseous atoms, contributing to the formation of gaseous ions.

Front

Explain the concept of ionic character in compounds.

Back

Ionic character refers to the extent to which a bond between two atoms has ionic characteristics, influenced by the difference in electronegativity.

Front

Which compound has the most covalent character: MgF2, MgBr2, AlF3, or AlBr3?

Back

AlBr3 has the most covalent character due to its smaller size and higher charge density.