Enthalpy of Lattice Formation Quiz

What are the necessary stages of the formation of sodium chloride?

• Separate solid sodium and gaseous chlorine molecules, ionize sodium and chlorine atoms, and form the lattice

• Combine solid sodium and gaseous chlorine molecules, ionize sodium and chlorine atoms, and form the lattice

• Separate solid sodium and gaseous chlorine molecules, combine sodium and chlorine atoms, and form the lattice

• Combine solid sodium and gaseous chlorine molecules, ionize sodium and chlorine atoms, and form the lattice

What is the definition of first electron affinity?

• The standard enthalpy change when a mole of gaseous atoms is converted to a mole of gaseous ions each with a single negative charge

• The standard enthalpy change when a mole of gaseous ions each with a single charge is converted to a mole of gaseous ions each with two negative charges

• The standard enthalpy change when a mole of gaseous atoms is converted to a mole of gaseous ions each with two negative charges

• The standard enthalpy change when a mole of gaseous ions each with two negative charges is converted to a mole of gaseous atoms

What is the definition of second electron affinity?

• The standard enthalpy change when a mole of gaseous atoms is converted to a mole of gaseous ions each with a single negative charge

• The standard enthalpy change when a mole of gaseous ions each with a single charge is converted to a mole of gaseous ions each with two negative charges

• The standard enthalpy change when a mole of gaseous atoms is converted to a mole of gaseous ions each with two negative charges

• The standard enthalpy change when a mole of gaseous ions each with two negative charges is converted to a mole of gaseous atoms

Why are first electron affinity values always negative?

• Because electrons are attracted to the positive nucleus

• Because energy must be put in to overcome the electrostatic charge between the electron and the negatively charged ion

• Because energy is released when new bonds are formed in the lattice

• Because energy is required to separate solid sodium and gaseous chlorine molecules

Why are second electron affinity values always positive?

• Because electrons are attracted to the positive nucleus

• Because energy must be put in to overcome the electrostatic charge between the electron and the negatively charged ion

• Because energy is released when new bonds are formed in the lattice

• Because energy is required to separate solid sodium and gaseous chlorine molecules

What is the definition of lattice enthalpy of formation?

• The standard enthalpy change when a mole of gaseous atoms is converted to a mole of gaseous ions each with a single charge

• The standard enthalpy change when a mole of gaseous ions each with a single charge is converted to a mole of gaseous ions each with two negative charges

• The standard enthalpy change when one mole of solid ionic compound is formed from its gaseous ions

• The standard enthalpy change when a mole of gaseous ions each with two negative charges is converted to a mole of gaseous atoms