The lattice energy of magnesium bromide, MgBr 2 , can be calculated using the enthalpy changes shown
Question:
The lattice energy of magnesium bromide, MgBr2, can be calculated using the enthalpy changes shown in the table.
a. State the meaning of the terms:
i. Lattice energy
ii. 2nd ionisation energy.
b. Draw and label a Born–Haber cycle to calculate the lattice energy of magnesium bromide.
c. Calculate the lattice energy of magnesium bromide.
Transcribed Image Text:
Type of enthalpy change Value of enthalpy change / kJ molH 1st ionisation energy of magnesium +736 2nd ionisation energy of magnesium +1450 1st electron affinity of bromine -325 enthalpy change of formation of MgBr, -524 enthalpy change of atomisation of magnesium +150 enthalpy change of atomisation of bromine +112
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Related Book For
Cambridge International AS And A Level Chemistry Coursebook
ISBN: 9781316637739
2nd Edition
Authors: Lawrie Ryan, Roger Norris
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