thermodynamics

• What is the definition of enthalpy change of formation?

  Change when one mole of compound forms
• What is lattice enthalpy of formation?

  Change when solid ionic compound forms from ions
• What is the lattice enthalpy of dissociation?

  Change when solid ionic compound dissociates into ions
• What does the enthalpy change of dissociation refer to?

  Breaking one mole of bonds in gaseous state
• What is the enthalpy change of first ionization?

  Change when gaseous atoms form gaseous ions
• What is enthalpy change of atomization?

  Change when gaseous atoms form from elements
• What is the second ionization energy?

  Change when gaseous two-plus ions form from one-plus ions
• What is the first electron affinity?

  Change when one mole of gaseous ions form from atoms
• What is the second electron affinity?


  Change when gaseous two-minus ions form from one-minus ions
• Why are Born-Haber cycles useful?

  To calculate lattice enthalpies indirectly
• What is the starting point of a Born-Haber cycle for lithium chloride?

  Solid lithium chloride
• What is the enthalpy of atomization of chlorine in the cycle?

  Converts $\frac{1}{2}Cl_2$ gas to Cl gas
• What is the first ionization energy of lithium?

  Removal of an electron to form lithium ion
• What happens during the electron affinity step for chlorine?

  Chlorine gains an electron, releasing energy
• What is the lattice enthalpy of formation in the cycle?

  Formation of lithium chloride from gaseous ions
• How does the Born-Haber cycle relate to Hess's law?

  Enthalpy change is independent of the route taken
• What is the significance of the direction of arrows in the Born-Haber cycle?

  Indicates whether the process is endothermic or exothermic
• What is the relationship between endothermic and exothermic processes in the cycle?

  Endothermic processes require energy input
• How do you calculate lattice enthalpies using the Born-Haber cycle?

  By applying known values to the cycle
• What is the enthalpy of atomization value for chlorine in the cycle?

  Divided by two for $Cl_2$ gas
• What is the significance of the lattice enthalpy of formation value?

  Indicates stability of the ionic compound
• What does a negative lattice enthalpy value indicate?

  Exothermic formation of the ionic compound
• What does a positive lattice enthalpy value indicate?

  Endothermic process for ionic compound formation
• How does the Born-Haber cycle help in understanding ionic compounds?

  It illustrates energy changes during formation
• What is the role of energy in the Born-Haber cycle?

  Energy is required for endothermic steps
• What is the importance of practicing Born-Haber cycles?

  To become familiar with definitions and processes
• What is the relationship between the Born-Haber cycle and thermodynamics?

  It applies thermodynamic principles to ionic compounds
• How can students effectively learn the definitions related to thermodynamics?

  By integrating them into practical examples
• What is the significance of the enthalpy change in the Born-Haber cycle?

  It quantifies energy changes in reactions
• What is the purpose of the video on AQA thermodynamics?

  To clarify thermodynamic concepts for students
• What is the expected outcome of watching the AQA thermodynamics video?

  Improved understanding of thermodynamic principles
• What is the relationship between the definitions and the Born-Haber cycle?

  Definitions are applied within the cycle
• How does the video aim to simplify complex chemistry topics?

  By breaking down concepts into manageable parts
• What is the significance of the standard states in thermodynamics?

  They provide a reference for enthalpy changes
• What is the role of the AQA specifications in the video?

  To ensure all relevant topics are covered
• What is the expected benefit of subscribing to the A Lurie chemistry channel?

  Access to more educational chemistry content
• What is the importance of practicing with the Born-Haber cycle?

  To reinforce understanding of thermodynamic concepts
• How does the video help students with exam preparation?

  By providing targeted information for AQA exams
• What is the significance of the definitions in thermodynamics?

  They are essential for understanding concepts
• How does the video address common student difficulties in chemistry?

  By simplifying complex topics and definitions