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NEET2015ChemistryCoordination CompoundsActual

In acidic medium, dichromatic ion oxidises ferrous ion to 'ferric ion. If the gram molecular weight of potassium dichromate is 294 g, its gram equivalent weight (in grams) is

Options

  1. A24.5
  2. B49
  3. C125
  4. D250

Correct answer

B. 49

Step-by-step solution

In acidic medium, K ₂ Cr ₂ O ₇ acts as strong oxidising agent and itself gets reduced to Cr ³⁺ . Equivalent weight of K ₂ Cr ₂ O ₇= Molecular weight 6 = 294 6 =49

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