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Questions and Answers
Which of the following is NOT a characteristic of an oxidation reaction?
Which of the following is NOT a characteristic of an oxidation reaction?
In a redox reaction, the substance that gets oxidized acts as a reducing agent.
In a redox reaction, the substance that gets oxidized acts as a reducing agent.
True (A)
What is the name given to a chemical reaction where both oxidation and reduction occur simultaneously?
What is the name given to a chemical reaction where both oxidation and reduction occur simultaneously?
Redox reaction
The substance that ______ oxygen or loses hydrogen or donates electrons is called a reducing agent.
The substance that ______ oxygen or loses hydrogen or donates electrons is called a reducing agent.
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Match the following examples with their corresponding type of reaction:
Match the following examples with their corresponding type of reaction:
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Flashcards
Oxidation Reaction
Oxidation Reaction
A reaction involving addition of oxygen, removal of hydrogen, or loss of electrons.
Reduction Reaction
Reduction Reaction
A reaction involving removal of oxygen, addition of hydrogen, or gain of electrons.
Redox Reaction
Redox Reaction
A reaction where oxidation and reduction occur simultaneously.
Oxidizing Agents
Oxidizing Agents
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Reducing Agents
Reducing Agents
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Study Notes
Oxidation & Reduction
- Oxidation Reaction: A chemical reaction involving the addition of oxygen to a substance, the removal of hydrogen from a substance, or the loss of electrons from an atom.
- Reduction Reaction: A chemical reaction involving the removal of oxygen from a substance, the addition of hydrogen to a substance, or the gain of electrons by an atom.
- Redox Reaction: A reaction where oxidation and reduction occur simultaneously, involving the transfer of electrons between substances. Reactions involving the loss or gain of electrons are considered redox reactions.
Example of Oxidation
- 2Cu + O₂ → 2CuO: Addition of oxygen to copper.
- H₂S + Cl₂ → 2HCl + S: Removal of hydrogen from H₂S and addition of hydrogen to chlorine. Loss of electrons from H₂S and gain of electrons from chlorine.
- 2FeCl₂ + Cl₂ → 2FeCl₃: Gain of electrons by chlorine; transfer of electrons from Fe2+ to Cl₂.
Example of Reduction
- CuO + H₂ → Cu + H₂O: Removal of oxygen from CuO to form Cu and addition of hydrogen to CuO to form H₂O.
- Cl₂ + H₂S → 2HCl + S: Addition of hydrogen to chlorine, gain of electrons to form HCl; oxidation of hydrogen sulfide to form sulfur with loss of electrons.
- 2FeCl₃ + SO₂ + 2H₂O → 2FeCl₂ + 2HCl + H₂SO₄: Gain of electrons to become Fe2+ .
Oxidizing Agents
- Substances that lose oxygen or gain hydrogen or accept electrons.
- Examples include O₂, Cl₂, H₂O₂, conc. H₂SO₄, conc. HNO₃, MnO₂, PbO₂, Pb₃O₄, KNO₃.
Reducing Agents
- Substances that gain oxygen or lose hydrogen or donate electrons.
- Examples include H₂, CO, SO₂, H₂S, NH₃, HCl, metals (e.g., K, Na).
- The substance that gets reduced acts as an oxidizing agent, while the substance that gets oxidized acts as a reducing agent.
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Description
Test your knowledge on oxidation and reduction reactions in this chemistry quiz. You'll answer questions about characteristics of redox reactions, identify reducing agents, and match examples to their reaction types. Perfect for students looking to enhance their understanding of chemical processes.
