Lattice Enthalpy

What is the lattice enthalpy of dissociation?

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

• The standard enthalpy change when one mole of solid ionic compound is broken up into its gaseous ions

• The enthalpy change when one mole of a substance is formed from its constituent elements

• The enthalpy change when the ions in one mole of a solid ionic compound are brought together

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NGSS.HS-PS2-4

What does lattice enthalpy represent?

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

• The enthalpy change when one mole of solid ionic compound is broken up into its gaseous ions

• The enthalpy change when one mole of a substance is formed from its constituent elements

• The enthalpy change when the ions in one mole of a solid ionic compound are brought together

What do greater magnitudes of lattice enthalpy indicate?

• Stronger ionic bonding

• Weaker ionic bonding

• Stronger covalent bonding

• Weaker covalent bonding

What factors contribute to stronger attractions and greater lattice enthalpy?

• Compounds with larger ions and lower charges

• Compounds with smaller ions and higher charges

• Compounds with larger ions and higher charges

• Compounds with smaller ions and lower charges

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NGSS.HS-PS2-4

How are the most realistic lattice enthalpies determined?

• By directly measuring the enthalpy change during lattice formation

• By directly measuring the enthalpy change during lattice dissociation

• By using experimental measurements and the Born-Haber cycle

• By using theoretical calculations based on ion size and charge

What does a significant difference between theoretical and experimental lattice enthalpies suggest?

• The compound has greater covalent character

• The compound has greater ionic character

• The ions are perfectly spherical

• The ions are highly charged

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NGSS.HS-PS1-3

What are the characteristics of ionic compounds with a highly covalent character?

• High solubility in water and high melting points

• Low solubility in water and low melting points

• High solubility in water and low melting points

• Low solubility in water and high melting points

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NGSS.HS-PS1-1

What does the magnitude of lattice enthalpy indicate?

• The overall strength of the covalent bonding

• The overall strength of the ionic bonding

• The overall strength of the metallic bonding

• The overall strength of the hydrogen bonding

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-4