Answered

Connect with knowledgeable individuals and find the best answers at IDNLearn.com. Ask any question and receive timely, accurate responses from our dedicated community of experts.

Which half-reaction equation represents the
reduction of a potassium ion?
(1) K+ + e-- ==>K (3) K+ ==>K + e--
(2) K + e-- ==> K+ (4) K==> K+ + e--

Sagot :

Lulu1991idn
The reduction reaction is the gain of electrons while oxidation reaction is the loss of electrons. For potassium ion(K+), the reaction should be K+ + e- ==> K. So the answer is (1).

Answer : The correct option is, (1) [tex]K^++e^-\rightarrow K[/tex]

Explanation :

Oxidation-reduction reaction : It is a type of reaction where the oxidation and reduction reaction takes place simultaneously.

Oxidation reaction : It is a reaction in which a substance looses its electrons. In this, oxidation state of an element increases. Or we can say that in oxidation, the loss of electrons takes place.

Reduction reaction : It is the reaction in which a substance gains electrons. In this, oxidation state of an element decreases. Or we can say that in reduction, the gain of electrons takes place.

As per question, the half-reaction equation of reduction of a potassium ion will be :

[tex]K^++e^-\rightarrow K[/tex]

In this reaction, the oxidation state of potassium changes from (+1) to (0) that means the oxidation state decreases. So, this reaction shows the half-reaction equation of reduction of a potassium ion.

Therefore, the correct option is, (1) [tex]K^++e^-\rightarrow K[/tex]

Thank you for contributing to our discussion. Don't forget to check back for new answers. Keep asking, answering, and sharing useful information. Your questions deserve precise answers. Thank you for visiting IDNLearn.com, and see you again soon for more helpful information.