what are redox reactions?
Answers
Answer- The above question is from the chapter 'Redox Reactions'.
Given question: What are redox reactions?
Answer: The word 'Redox' has been derived from 'Red' which means Reduction and 'ox' meaning Oxidation.
It suggests that Oxidation and Reduction reactions go hand in hand.
The process of reduction involves-
1. Removal of oxygen from a substance.
2. Addition of hydrogen to a substance.
3. Gain of electrons in a substance.
4. Gain of electropositive element in a substance.
5. Removal of electropositive element from a substance.
6. Decrease in the oxidation number of a substance.
The process of oxidation involves-
1. Addition of oxygen to a substance.
2. Removal of hydrogen from a substance.
3. Loss of electrons in a substance.
4. Removal of electropositive element from a substance.
5. Gain of electropositive element in a substance
6. Increase in the oxidation number of a substance.
Example:
ZnO + C → Zn + CO
Here, ZnO has been reduced as oxygen is removed from it.
C has been oxidised.
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