Question

The reaction 2k(s) + br2(l) → 2kbr(s) is a(n) ______________ reaction.

Answer 1

Answer:

The correct answer is oxidation-reduction.

Explanation:

This reduction-oxidation reaction is given by the following semi-reactions:

$Br_{2}$ + 2 $e^{-}$ → 2 $Br^{-1}$ (reduction)

2 $K^{0}$ - 2 $e^{-}$ → 2 $K^{1}$ (oxidation)

$Br_{2}$ is an oxidation agent, K is a reducing agent.  

This means that $Br_{2}$ oxidizes K by increasing its oxidation number from 0 to 1.

$Br_{2}$ is reduced, decreasing its oxidation number from 0 to -1.

Have a nice day!

Answer 2

An oxidation reaction