Question

For the processes $K^{+}\left(g\right)\stackrel{I}{⟶}K\left(g\right)\stackrel{II}{⟶}{K}^{-}\left(g\right)$

• A. Energy is released in (I) and absorbed in (II)
• B. Energy is absorbed in (I) and released in (II)
• C. Energy is absorbed in both the processes
• D. Energy is released in both the processes

Answer 1

The correct option is D

Energy is released in both the processes

(I)$K^{+}\left(g\right)\stackrel{+e^{-}}{⟶}K\left(g\right)⟶$ Negative electron gain enthalpy

(II)$K\left(g\right)\stackrel{+e^{-}}{⟶}{K}^{-}\left(g\right)⟶$ Positive electron gain enthalpy

In first process energy is released while in the second energy is absorbed.