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Use the Following Data to Calculate the Enthalpy Change for the Following

Question 46

Multiple Choice

Use the following data to calculate the enthalpy change for the following reaction: K(s) +12Cl2(g) KCl(s)  Quantity  Magnitude (kJ/mol)  Ionization energy of K(g) 425 Electron affinity of Cl(g) 349 Vaporization energy of K(s) 89 Bond energy of Cl2(g) 240 Lattice energy of KCl(s) 723\begin{array} { l c } { \mathrm { K } ( s ) + \frac { 1 } { 2 } \mathrm { Cl } _ { 2 } ( g ) \rightarrow \mathrm { KCl } ( s ) } & \\ { \text { Quantity } } & \text { Magnitude } ( \mathbf { k J } / \mathbf { m o l } ) \\\text { Ionization energy of } \mathrm { K } ( g ) & 425 \\\text { Electron affinity of } \mathrm { Cl } ( g ) & - 349 \\\text { Vaporization energy of } \mathrm { K } ( s ) & 89 \\\text { Bond energy of } \mathrm { Cl } _ { 2 } ( g ) & 240 \\\text { Lattice energy of } \mathrm { KCl } ( s ) & - 723\end{array}


A) -603 kJ/mol
B) -11.0 kJ/mol
C) 405 kJ/mol
D) -318 kJ/mol
E) -438 kJ/mol

Correct Answer:

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