Questions: Consider the following data for oxygen: atomic mass: 15.999 g/mol electronegativity: 3.44 electron affinity: 141. kJ/mol ionization energy: 1313.9 kJ/mol heat of fusion: 0.222 kJ/mol Does the following reaction absorb or release energy? (1) O+(g)+e− → O(g) - release - absorb - Can't be decided with the data given. Is it possible to calculate the amount of energy absorbed or released by reaction (1) using only the data above? - yes - no If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (1): 141.0 kJ / mol Does the following reaction absorb or release energy? (2) O(g) → O+(g)+e− - release - absorb - Can't be decided with the data given. Is it possible to calculate the amount of energy absorbed or released by reaction (2) using only the data above? - yes - no If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (2): 1314. kJ / mol

Consider the following data for oxygen: atomic mass: 15.999 g/mol electronegativity: 3.44 electron affinity: 141. kJ/mol ionization energy: 1313.9 kJ/mol heat of fusion: 0.222 kJ/mol Does the following reaction absorb or release energy? (1) O+(g)+e− → O(g) - release - absorb - Can't be decided with the data given. Is it possible to calculate the amount of energy absorbed or released by reaction (1) using only the data above? - yes - no If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (1): 141.0 kJ / mol Does the following reaction absorb or release energy? (2) O(g) → O+(g)+e− - release - absorb - Can't be decided with the data given. Is it possible to calculate the amount of energy absorbed or released by reaction (2) using only the data above? - yes - no If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (2): 1314. kJ / mol
Transcript text: Consider the following data for oxygen: atomic mass: $15.999 \frac{\mathrm{g}}{\mathrm{mol}}$ electronegativity: 3.44 electron affinity: $141 . \frac{\mathrm{kJ}}{\mathrm{mol}}$ ionization energy: $1313.9 \frac{\mathrm{kJ}}{\mathrm{mol}}$ heat of fusion: $0.222 \frac{\mathrm{kJ}}{\mathrm{mol}}$ Does the following reaction absorb or release energy? (1) $\mathrm{O}^{+}(g)+e^{-} \rightarrow \mathrm{O}(g)$ - release - absorb - Can't be decided with the data given. Is it possible to calculate the amount of energy absorbed or released by reaction (1) using only the data above? - yes - no If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (1): $141.0 \mathrm{~kJ} / \mathrm{mol}$ Does the following reaction absorb or release energy? (2) $\mathrm{O}(g) \rightarrow \mathrm{O}^{+}(g)+e^{-}$ - release - absorb - Can't be decided with the data given. Is it possible to calculate the amount of energy absorbed or released by reaction (2) using only the data above? - yes - no If you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (2): 1314. $\mathrm{kJ} / \mathrm{mol}$
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Solution

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Solution Steps

Step 1: Determine if Reaction (1) Absorbs or Releases Energy

The reaction given is: \[ \mathrm{O}^{+}(g) + e^{-} \rightarrow \mathrm{O}(g) \] This reaction involves the addition of an electron to an oxygen ion (\(\mathrm{O}^{+}\)). The electron affinity of oxygen is the energy change when an electron is added to a neutral oxygen atom to form an anion (\(\mathrm{O}^{-}\)). However, in this case, we are adding an electron to a positively charged ion (\(\mathrm{O}^{+}\)) to form a neutral atom (\(\mathrm{O}\)).

Since the electron affinity is given as \(141 \, \mathrm{kJ/mol}\) for the neutral atom, and this value is typically a release of energy, we can infer that adding an electron to \(\mathrm{O}^{+}\) will also release energy.

Step 2: Determine if the Energy Change Can Be Calculated Using Given Data

The data provided includes the electron affinity of oxygen, which is \(141 \, \mathrm{kJ/mol}\). This value is sufficient to determine the energy change for the reaction: \[ \mathrm{O}^{+}(g) + e^{-} \rightarrow \mathrm{O}(g) \]

Step 3: Calculate the Energy Change for Reaction (1)

Since the electron affinity of oxygen is \(141 \, \mathrm{kJ/mol}\), the energy released when an electron is added to \(\mathrm{O}^{+}\) to form \(\mathrm{O}\) is \(141 \, \mathrm{kJ/mol}\).

\[ \boxed{141.0 \, \mathrm{kJ/mol}} \]

Final Answer

  1. The reaction \(\mathrm{O}^{+}(g) + e^{-} \rightarrow \mathrm{O}(g)\) releases energy.
  2. Yes, it is possible to calculate the amount of energy absorbed or released using the given data.
  3. The amount of energy released by reaction (1) is \(\boxed{141.0 \, \mathrm{kJ/mol}}\).
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