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In oxidation reactions, electrons are

Chemistry
JAMB 2025

In oxidation reactions, electrons are

  • A. hydrolysed
  • B. removed
  • C. added
  • D. hydrated
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Correct Answer: Option B
Explanation

Oxidation is defined as the loss or removal of electrons from a substance. A common mnemonic device used to remember this is "OIL RIG", which stands for "Oxidation Is Loss", "Reduction Is Gain" (of electrons). When a substance is oxidized, its oxidation number increases, indicating a loss of negatively charged electrons. 

A. hydrolysed and D. hydrated: Hydrolysis is a chemical process involving the splitting of a molecule by the addition of water, while hydration is the addition of water molecules to a substance. These processes are not the general definition of what happens to electrons during oxidation reactions.

C. added: The addition or gain of electrons is the definition of a reduction reaction, which occurs simultaneously with oxidation in a redox reaction. 

The correct answer is option B - removed

There is an explanation video available below.


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Explanation Video

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