Question

consider the following data for iodine:

atomic mass	$126.90\frac{g}{mol}$
electronegativity	2.66
electron affinity	$295.2\frac{kj}{mol}$
ionization energy	$1008.4\frac{kj}{mol}$
heat of fusion	$7.76\frac{kj}{mol}$

you may find additional useful data in the aleks data tab.
your answer
does the following reaction absorb or release energy? (1) $i(g)
ightarrow i^{+}(g)+e^{-}$ release absorb cant 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): 1008.4 kj/mol
does the following reaction absorb or release energy? (2) $i^{+}(g)+e^{-}
ightarrow i(g)$ release absorb cant 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): kj/mol

Explanation:

Step1: Analyze reaction (1)

The reaction \(I(g)\to I^{+}(g)+e^{-}\) is an ionization process. Ionization energy is the energy required to remove an electron from a gaseous - atom. Given the ionization energy of iodine is \(1008.4\frac{kJ}{mol}\), so this reaction absorbs energy. And the amount of energy absorbed is equal to the ionization energy.

Step2: Analyze reaction (2)

The reaction \(I^{+}(g)+e^{-}\to I(g)\) is the reverse of the ionization process. The energy change for this reverse - process is equal in magnitude but opposite in sign to the ionization energy. So, it releases energy and the amount of energy released is \(1008.4\frac{kJ}{mol}\).

Answer:

1. absorb
2. yes
3. \(1008.4\)
4. release
5. yes
6. \(1008.4\)