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VashaNatasha [74]
3 years ago
13

Which half-reaction equation represents the

Chemistry
2 answers:
erica [24]3 years ago
8 0
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).
GalinKa [24]3 years ago
4 0

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

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 :

K^++e^-\rightarrow K

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) K^++e^-\rightarrow K

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