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In a redox reaction, if the oxidation state of an element decreases, what happen

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Question: In a redox reaction, if the oxidation state of an element decreases, what happens to that element? (2021)

Options:

  1. It is oxidized
  2. It is reduced
  3. It remains unchanged
  4. It is ionized

Correct Answer: It is reduced

Exam Year: 2021

Solution: 

A decrease in oxidation state indicates that the element has gained electrons, which means it is reduced.

In a redox reaction, if the oxidation state of an element decreases, what happen

Practice Questions

Q1
In a redox reaction, if the oxidation state of an element decreases, what happens to that element? (2021)
  1. It is oxidized
  2. It is reduced
  3. It remains unchanged
  4. It is ionized

Questions & Step-by-Step Solutions

In a redox reaction, if the oxidation state of an element decreases, what happens to that element? (2021)
  • Step 1: Understand what oxidation state means. It is a number that shows how many electrons an atom has gained or lost.
  • Step 2: Recognize that a decrease in oxidation state means the atom has lost a positive charge or gained a negative charge.
  • Step 3: Realize that gaining electrons makes the atom more negative, which is called reduction.
  • Step 4: Conclude that if the oxidation state decreases, the element is being reduced.
  • Redox Reactions – In redox reactions, oxidation refers to the loss of electrons and an increase in oxidation state, while reduction refers to the gain of electrons and a decrease in oxidation state.
  • Oxidation States – Understanding oxidation states is crucial for identifying which elements are oxidized and which are reduced in a chemical reaction.
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