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Redox reactions occur in many everyday experiences. Three examples of common redox reactions that everyone is familiar with are outlined below. Write the chemical equation for each of these reactions and identify the oxidizing agent and the reducing agent.

Note: If needed, consult a web source to determine the reaction.

a. When silver jewelry or silverware tarnishes, it is reacting with S in the air to undergo a redox reaction.

b. When someone leaves a screwdriver sitting outside and it rusts, the iron in the screwdriver underwent a redox reaction.

c. The process of photosynthesis, which causes green plants to react with sunlight to form oxygen, is an example of a redox reaction.

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Answer:

a. 2Ag(s) + 1/2O₂(g) + H₂S(g) → Ag₂S(s) + H₂O (l)

Oxidizing agent: O

Reducing agent: Ag

b. Fe (s) + 3O₂  →   2Fe₂O₃ (s)

Oxidizing agent: O

Reducing agent: Fe

c. 6CO₂ (g) + 6H₂O (l) → C₆H₁₂O₆ (s)  + 6O₂ (g)

Oxidizing agent: C

Reducing agent: O

Explanation:

a. Silver reacts with S, which is in the air as H₂S

2Ag(s) + 1/2O₂(g) + H₂S(g) → Ag₂S(s) + H₂O (l)

Ag changes from 0 to +1, the oxidation state - Oxidation

O changes from 0 to -2, the oxidation state - Reduction

b. Iron reacts with O, from the air

Fe (s) + 3O₂  →   2Fe₂O₃ (s)

Fe changes from 0 to +3, the oxidation state - oxidation

O changes from 0 to -2, the oxidation state - Reduction

c. 6CO₂ + 6H₂O → C₆H₁₂O₆  + 6O₂

C changes from +4 to +1, the oxidation state - reduction

O changes from -2 to O, the oxidation state - oxidation

pstnonsonjoku

Redox reactions involve loss and gain of electrons. The following are redox reactions;

  • The tarnishing of  silver occurs according to the reaction;

2Ag(s) + 1/2O₂(g) + H₂S(g) → Ag₂S(s) + H₂O (l)

  • The rusting of iron is shown by the equation;

4Fe + 3O2 + 6H2O → 4Fe(OH)3

  • The process of photosynthesis;

6CO2 + 6H2O → C6H12O6 + 6O2

What are redox reactions?

Redox reactions are those reactions in which one specie is oxidized and another specie is reduced. The oxidizing agent will experience  a decrease in oxidation number while the reducing agent will experience an increase in oxidation number.

  • The tarnishing of silver occurs according to the reaction;

2Ag(s) + 1/2O₂(g) + H₂S(g) → Ag₂S(s) + H₂O (l)

Oxygen is the oxidizing agent and Ag is the reducing agent

  • The rusting of iron is shown by the equation;

4Fe + 3O2 + 6H2O → 4Fe(OH)3

Fe is the reducing agent and oxygen is the oxidizing agent

  • The process of photosynthesis is shown by the equation;

6CO2 + 6H2O → C6H12O6 + 6O2

water is the oxidizing agent and CO2 is the reducing agent

Learn more about redox reaction: https://brainly.com/question/21288807

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