S2 questions

avatar
Created by
miyu sago

Cards (3)

  • what are the properties of ionic compounds?
    mp and bp- high
    solid- do not conduct electricity (no free electrons and ions are fixed position and cannot move towards electrones)
    molten-electrolytes (no free electrons and charge can be carried by the mobile ions)
    solubility- ionic compounds are soluble in water and ions become hydrated
    if the hydration enthalpy is greater than the lattice enthalpy of an ionic compound, the compound dissolves easily in water
  • what are the factors affecting lattice enthalpy?
    the size and charge of ion (when it is more dense, higher the lattice enthalpy)
  • when the number of shared pairs of electron increases....
    bond length decreases and bond strength increases