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What is the primary oxidation state of chlorine in potassium chloride (KCl)?

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Question: What is the primary oxidation state of chlorine in potassium chloride (KCl)?

Options:

  1. -1
  2. 0
  3. +1
  4. +7

Correct Answer: -1

Solution: 

In potassium chloride, chlorine has an oxidation state of -1.

What is the primary oxidation state of chlorine in potassium chloride (KCl)?

Practice Questions

Q1
What is the primary oxidation state of chlorine in potassium chloride (KCl)?
  1. -1
  2. 0
  3. +1
  4. +7

Questions & Step-by-Step Solutions

What is the primary oxidation state of chlorine in potassium chloride (KCl)?
Correct Answer: -1
  • Step 1: Identify the chemical formula of potassium chloride, which is KCl.
  • Step 2: Recognize that potassium (K) is an alkali metal and typically has an oxidation state of +1.
  • Step 3: Understand that in a neutral compound, the total oxidation states must equal zero.
  • Step 4: Since potassium has an oxidation state of +1, the oxidation state of chlorine must balance it out to make the total zero.
  • Step 5: Calculate the oxidation state of chlorine: +1 (from K) + x (from Cl) = 0.
  • Step 6: Solve for x: x = -1.
  • Step 7: Conclude that the oxidation state of chlorine in potassium chloride (KCl) is -1.
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