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

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Answer 1 · 2017-06-19T12:37:24

#"A redox reaction..........."#

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

Potassium metal is oxidized to potassium ion....

#K(s) rarr K^(+) + e^(-)# #(i)#

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

#1/2I_2+e^(-) rarr I^-# #(ii)#

And we add #(i)# and #(ii)# together to eliminate the electrons........

#K+ 1/2I_2 rarr KI#............