Calculate the Lattice Enthalpy of Potassium Fluoride from the Following $\Delta$

question 68

Multiple Choice

Calculate the lattice enthalpy of potassium fluoride from the following data. enthalpy of formation of K(g) : +89 kJ.mol^-1
First ionization energy of K(g) : +418 kJ.mol^-1
Enthalpy of formation of F(g) : +79 kJ.mol^-1
Electron affinity of F(g) : +328 ( $\Delta$ H = -328) kJ.mol^-1
Enthalpy of formation of KF(s) : -567 kJ.mol^-1

• A)1481 kJ.mol^-1
• B)825 kJ.mol^-1
• C)904 kJ.mol^-1
• D)497 kJ.mol^-1
• E)347 kJ.mol^-1

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