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JEE Main20241 Feb 2024Morning ShiftChemistryRedox ReactionsActual

In acidic medium, K 2 Cr 2 O 7 shows oxidising action as represented in the half reaction Cr 2 O 7 2 - + XH + + Ye - → 2 A + ZH 2 O X , Y , Z and A are respectively are:

Options

  1. A8 , 6 , 4 and Cr 2 O 3
  2. B14 , 7 , 6 and Cr 3 +
  3. C8 , 4 , 6 and Cr 2 O 3
  4. D14 , 6 , 7 and Cr 3 +

Correct answer

D. 14 , 6 , 7 and Cr 3 +

Step-by-step solution

Potassium dichromate, K 2 Cr 2 O 7 , is a common inorganic chemical reagent, most commonly used as an oxidizing agent in various laboratory and industrial applications. The balanced reaction is, Cr 2 O 7 2 - + 14 H + + 6 e - → 2 Cr 3 + + 7 H 2 O X = 14 Y = 6 A = 7

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