Chemistry, 14.07.2019 10:00 hi510hello

Kno3 → kno2 + o2 which element is oxidized? which element is reduced? what is the oxidizing agent? what is the reducing agent?

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Answer from: arnold2619

Nitrogen is reduced and is therefore the oxidizing agent. Oxygen is oxidized and is therefore the reducing agent.

Answer from: destinyleisantos

Answer :

The oxidized element is, oxygen.

The reduced element is, nitrogen.

The oxidizing agent is, nitrogen.

The reducing agent is, oxygen.

Explanation :

Oxidation reaction : It is defined as the reaction in which a substance looses its electrons. In this, oxidation state of an element increases.

Reduction reaction : It is defined as the reaction in which a substance gains electrons. In this, oxidation state of an element decreases.

Reducing agent : It is defined as the agent which helps the other substance to reduce and itself gets oxidized.

Oxidizing agent : It is defined as the agent which helps the other substance to oxidize and itself gets reduced.

The given balanced oxidation-reduction is :

$KNO_3\rightarrow KNO_2+O_2$

First we have to determine the oxidation state of nitrogen and oxygen in $KNO_3,KNO_2\text{ and }O_2$ .

The oxidation state of nitrogen in KNO_3 .

Let the oxidation state of 'N' be, 'x'.

$(+1)+x+3(-2)=0\\\\x=+5$

The oxidation state of nitrogen in KNO_2 .

$(+1)+x+2(-2)=0\\\\x=+3$

The oxidation state of oxygen in KNO_3 is, (-2).

The oxidation state of oxygen in O_2 is, 0.

From the given reaction we conclude that, the oxidation state of 'N' changes from (+5) to (+3) that means 'N' gain 2 electrons and it shows reduction and also known as oxidizing agent. The oxidation state of 'O' changes from (-2) to (0) that means 'O' lost 2 electrons and it shows oxidation and also know as reducing agent.

Hence, the oxidized element is, oxygen. The reduced element is, nitrogen. The oxidizing agent is, nitrogen. The reducing agent is, oxygen.

Answer from: Quest

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Answer from: Quest

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72

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Kno3 → kno2 + o2 which element is oxidized? which element is reduced? what is the oxidizing agent?...

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