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Questions and Answers
What is the primary basis of a redox titration?
What is the primary basis of a redox titration?
According to modern definitions, what defines oxidative processes?
According to modern definitions, what defines oxidative processes?
In a redox reaction, what happens to the oxidation number during oxidation?
In a redox reaction, what happens to the oxidation number during oxidation?
Which of the following processes is considered a reduction in terms of electron transfer?
Which of the following processes is considered a reduction in terms of electron transfer?
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What is the outcome of a reduction reaction based on the summary table?
What is the outcome of a reduction reaction based on the summary table?
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Study Notes
Redox Reactions
- REDOX is a type of titration using an oxidation-reduction reaction between the analyte and the titrant.
- Reduction is the process of gaining electrons, often involving the combination with hydrogen or the loss of oxygen.
- Oxidation is the process of losing electrons, often involving the combination with oxygen or the loss of hydrogen.
- Examples of reduction reactions include corrosion, combustion, and photosynthesis.
- Examples of oxidation reactions are similar to reduction reactions but with opposite outcomes.
- Formula examples of both reduction and oxidation reactions are provided.
- Reduction: $4 Fe(s) + 3O_2(aq) \rightarrow 2 Fe_2O_3(s)$
- Oxidation: $C_xH_y + nO_2 \rightarrow nCO_2 + n H_2O$
Defining Oxidation and Reduction
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Old definitions:
- Oxidation: Combination with oxygen or loss of hydrogen.
- Reduction: Combination with hydrogen or loss of oxygen.
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Modern definitions:
- Oxidation: A reaction that involves loss of electrons.
- Reduction: A reaction that involves gain of electrons.
Oxidation and Reduction Summary
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Feature | Reduction | Oxidation
- Loss of | O | O
- Gain of | $H$ | $H$
- Oxidation number | Decrease | Increase
- Electrons | Gain | Loss
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Description
Test your understanding of redox reactions, including the processes of oxidation and reduction. This quiz covers definitions, examples, and formulaic representations of both types of reactions. Perfect for chemistry students looking to solidify their knowledge on this critical topic.
