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What is the product of the reduction of Cr2O7²⁻ in acidic medium? (2019)

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Question: What is the product of the reduction of Cr2O7²⁻ in acidic medium? (2019)

Options:

  1. CrO4²⁻
  2. Cr³⁺
  3. Cr²O3
  4. CrO2

Correct Answer: Cr³⁺

Exam Year: 2019

Solution: 

In acidic medium, Cr2O7²⁻ is reduced to Cr³⁺.

What is the product of the reduction of Cr2O7²⁻ in acidic medium? (2019)

Practice Questions

Q1
What is the product of the reduction of Cr2O7²⁻ in acidic medium? (2019)
  1. CrO4²⁻
  2. Cr³⁺
  3. Cr²O3
  4. CrO2

Questions & Step-by-Step Solutions

What is the product of the reduction of Cr2O7²⁻ in acidic medium? (2019)
  • Step 1: Identify the compound Cr2O7²⁻, which is called dichromate.
  • Step 2: Understand that the question is asking what happens to dichromate when it is reduced in an acidic environment.
  • Step 3: Recall that reduction means gaining electrons.
  • Step 4: In acidic medium, dichromate (Cr2O7²⁻) gains electrons.
  • Step 5: The product of this reduction is chromium in the +3 oxidation state, which is Cr³⁺.
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