Use the Following Data to Calculate the Lattice Energy of Lithium

question 71

Multiple Choice

Use the following data to calculate the lattice energy of lithium oxide, Li₂O. $$\begin{array} { l c } { \text { Quantity } } & \text { Magnitude } ( \mathrm { kJ } / \mathbf { m o l } ) \\\text { Ionization energy of } \mathrm { Li } ( g ) & 519 \\\text { Electron affinity of } \mathrm { O } ( g ) \text { for } 2 \mathrm { e } & 603 \\\text { Vaporization energy of } \mathrm { Li } ( s ) & 147 \\\text { Bond energy of } \mathrm { O } _ { 2 } ( g ) & 499 \\\text { Reaction enthalpy: } 2 \mathrm { Li } ( s ) + \frac { 1 } { 2 } \mathrm { O } _ { 2 } ( g ) \rightarrow \mathrm { Li } _ { 2 } \mathrm { O } ( s ) & - 20\end{array}$$

• A) -2,586 kJ/mol
• B) -2,972 kJ/mol
• C) -3,081 kJ/mol
• D) -2,205 kJ/mol
• E) -2,831 kJ/mol

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