Born-Haber Cycles

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  • Created by: ava.scott
  • Created on: 05-03-15 15:52
  • Allows the calculation of an enthalpy change that cannot be measured directly.

WHY CANT IT BE MEASURED?

  • Can't be done in standard conditions
  • A lattice can't be made from gaseous ions

BEGIN:

  • Start your elements at their standard states on the zero line.
  • Enthalpy of formation is exothermic, so draw a line pointing down to make your ionic compound.
  • From the zero line, draw the next series of arrows.

ATOMISATION:

  • Enthalpy of atomisation is an endothermic process, so arrows will point UP.
  • Atomisation always makes 1 mol, so if you are making…

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