Using the Following Data to Calculate the Lattice Energy of NaBr(s)

question 59

Multiple Choice

Using the following data to calculate the lattice energy of NaBr(s) . ?IE and ?EA are enthalpy of ionization and electron attachment enthalpy, respectively. $$\begin{array} { l l } \mathrm { Na } ( \mathrm { s } ) \rightarrow \mathrm { Na } ( \mathrm { g } ) & \Delta _f H ^ { \circ } = + 107 \mathrm {~kJ} \\\mathrm { Na } ( \mathrm { g } ) \rightarrow \mathrm { Na } ^ { + } ( \mathrm { g } ) + \mathrm { e } ^ { - } & \Delta I E = + 496 \mathrm {~kJ} \\1 / 2 \mathrm { Br } _ { 2 } ( \mathrm {~g} ) \rightarrow \mathrm { Br } ( \mathrm { g } ) & \Delta_f H ^ { \circ } = + 112 \mathrm {~kJ} \\\mathrm { Br } ( \mathrm { g } ) + \mathrm { e } ^ { - } \rightarrow \mathrm { Br } ^ { - } ( \mathrm { g } ) & \Delta E A = - 325 \mathrm {~kJ} \\\mathrm { Na } ( \mathrm { s } ) + 1 / 2 \mathrm { Br } _ { 2 } ( \mathrm {~g} ) \rightarrow \mathrm { NaBr } ( \mathrm { s } ) & \Delta_f H ^ { \circ } = - 361 \mathrm {~kJ}\end{array}$$

• A) -1401 kJ
• B) -751 kJ
• C) -241 kJ
• D) +241 kJ
• E) +751 kJ

Understand the concept of learned helplessness and its effects on behavior and learning.

Comprehend the significance of social learning theory and the observational learning process.

Recognize the role of contrast effects in reinforcement and its influence on performance.

Understand the concepts of covariance and the coefficient of correlation, including their differences and applications.

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