Born-Haber cycle

Given the Born-Haber cycle below, which of the following enthalpy change is not represented by steps a-g

• Enthalpy of formation

• enthalpy of atomization of calcium

• 1st electron affinity of bromine

• 2nd electron affinity of bromine

Tags

NGSS.HS-PS1-4

Which equation represents the process that occurs when the standard enthalpy of atomisation of iodine is measured?

• 1/2 I₂(s) → I(g)

• I₂(s) → 2I(g)

• 1/2 I₂(g) → I(g)

• I₂(g) → 2I(g)

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Lattice enthalpy values can be obtained from Born–Haber cycles and by calculations based on a perfect ionic model.

Which compound shows the greatest percentage difference between these two values?

• CsF

• CsI

• LiF

• LiI

Which one of the following statements is not correct?

• The first ionisation energy of iron is greater than its second ionisation energy.

• The magnitude of the lattice enthalpy of magnesium oxide is greater than that of barium oxide.

• More ionic character means more difference in lattice enthalpy theoretical and experimental values

Tags

NGSS.HS-PS1-1

Which one of the following has the most covalent character?

• MgF₂

• MgBr₂

• AlF₃

• AlBr₃

Enthalpy change is represented by steps S?

• Enthalpy formation of Calcium bromide

• enthalpy atomization of calcium

• 1st electron affinity of bromine

• 2nd electron affinity of bromine

Tags

NGSS.HS-PS1-4

Enthalpy change is represented by steps Y ?

• Enthalpy of formation calcium bromide

• enthalpy of atomization of calcium

• 1st electron affinity of bromine

• enthalpy of atomization of bromine

Tags

NGSS.HS-PS1-4

Enthalpy change is represented by step V ?

• Enthalpy of formation bromine

• enthalpy of atomization bromine

• 1st electron affinity of bromine

• 2nd electron affinity of bromine

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

What enthalpy change does the number 4 represent?

• Formation

• 1st ionisation energy (Na)

• 1st electron affinity (Na)

• Atomisation (Na)

Tags

NGSS.HS-PS1-4

What is the definition of lattice enthalpy?

• Enthalpy change when one mole of an ionic lattice is formed from gaseous ions

• Enthalpy change when an ionic lattice is formed from one mole of gaseous ions

• Enthalpy change when one mole of an ionic lattice is formed from ions in their standard states

• Enthalpy change when an ionic lattice is formed from one mole of gaseous atoms