# What kind of reaction is represented by 2K + I_2 -> 2KI?

Jun 19, 2017

$\text{A redox reaction...........}$

#### Explanation:

And redox reactions are conceived to occur on the basis of FORMAL electron transfer:

Potassium metal is oxidized to potassium ion....

$K \left(s\right) \rightarrow {K}^{+} + {e}^{-}$ $\left(i\right)$

And iodine is reduced to iodide ion......

$\frac{1}{2} {I}_{2} + {e}^{-} \rightarrow {I}^{-}$ $\left(i i\right)$

And we add $\left(i\right)$ and $\left(i i\right)$ together to eliminate the electrons........

$K + \frac{1}{2} {I}_{2} \rightarrow K I$............