consider the following data for nickel:\n| | |\n|--|--|\n| atomic mass | 58.693 $\frac{g}{mol}$ |\n|…

consider the following data for nickel:\n| | |\n|--|--|\n| atomic mass | 58.693 $\frac{g}{mol}$ |\n| electronegativity | 1.91 |\n| electron affinity | 112. $\frac{kj}{mol}$ |\n| ionization energy | 737.1 $\frac{kj}{mol}$ |\n| heat of fusion | 17.2 $\frac{kj}{mol}$ |\nyou may find additional useful data in the aleks data tab.\nyour answer\n| | |\n|--|--|\n| does the following reaction absorb or release energy? (1) $ni^{-}(g)\rightarrow ni(g)+e^{-}$ | absorb |\n| is it possible to calculate the amount of energy absorbed or released by reaction (1) using only the data above? | yes |\n| if you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (1): | $square kj/mol$ |\n| does the following reaction absorb or release energy? (2) $ni(g)+e^{-}\rightarrow ni^{-}(g)$ | release |\n| is it possible to calculate the amount of energy absorbed or released by reaction (2) using only the data above? | yes |\n| if you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (2): | 112 kj/mol |

consider the following data for nickel:\n| | |\n|--|--|\n| atomic mass | 58.693 $\frac{g}{mol}$ |\n| electronegativity | 1.91 |\n| electron affinity | 112. $\frac{kj}{mol}$ |\n| ionization energy | 737.1 $\frac{kj}{mol}$ |\n| heat of fusion | 17.2 $\frac{kj}{mol}$ |\nyou may find additional useful data in the aleks data tab.\nyour answer\n| | |\n|--|--|\n| does the following reaction absorb or release energy? (1) $ni^{-}(g)\rightarrow ni(g)+e^{-}$ | absorb |\n| is it possible to calculate the amount of energy absorbed or released by reaction (1) using only the data above? | yes |\n| if you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (1): | $square kj/mol$ |\n| does the following reaction absorb or release energy? (2) $ni(g)+e^{-}\rightarrow ni^{-}(g)$ | release |\n| is it possible to calculate the amount of energy absorbed or released by reaction (2) using only the data above? | yes |\n| if you answered yes to the previous question, enter the amount of energy absorbed or released by reaction (2): | 112 kj/mol |

Answer

Explanation:

Step1: Analyze reaction (1)

The reaction $\text{Ni}^{-}(g)\to\text{Ni}(g)+e^{-}$ is the reverse of electron - attachment to $\text{Ni}(g)$. Removing an electron from an anion requires energy, so it absorbs energy. The energy required is equal to the electron affinity of $\text{Ni}$ but with the opposite sign.

Step2: Determine energy for reaction (1)

The electron affinity of $\text{Ni}$ is $112\ \frac{\text{kJ}}{\text{mol}}$. For the reaction $\text{Ni}^{-}(g)\to\text{Ni}(g)+e^{-}$, the energy absorbed is $112\ \frac{\text{kJ}}{\text{mol}}$.

Step3: Analyze reaction (2)

The reaction $\text{Ni}(g) + e^{-}\to\text{Ni}^{-}(g)$ is the electron - attachment process to a neutral atom. By definition, the energy change for this process is the electron affinity. Given that the electron affinity of $\text{Ni}$ is $112\ \frac{\text{kJ}}{\text{mol}}$, this reaction releases $112\ \frac{\text{kJ}}{\text{mol}}$ of energy.

Answer:

(1) absorb, yes, $112$ (2) release, yes, $112$