Enthalpy And Entropy Flashcards
Define electron affinity
Enthalpy change that occurs when 1 mol of a gaseous atom gains an electron to form a 1- gaseous ion
Define enthalpy of atomisation
Enthalpy change which occurs when 1 mol of a gaseous atom is produced from an element in its standard states
What are ionic Lattices impacted by?
Nuclear charge and Atomic radius
What does a large difference in values show about chemical characteristics?
More covalent characteristics
What happens to ionic radius across a period?
Decreases so nuclear attraction is greater
What happens to ionic radius down a group?
Increases weaker nuclear attraction
What does a difference in enthalpy values show?
More covalent characteristics
Define entropy
Mrasure if dispersal of energy and disorder in jkmol
How do you calculate entropy?
Sum of products - sum of reactants
