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

question 50

Multiple Choice

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

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

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Definitions:

Price of Labor

The compensation, including wages, salaries, and benefits, that employers pay to employees for their labor or work done.

Long-Run Cost Function

A representation of the total cost associated with production when all factors of production are variable.

Positive Amount

A value greater than zero, often used in financial and mathematical contexts to denote an increase or positive quantity.

Total Cost Functions

Mathematical representations that describe how the total cost of production changes as the output level varies.