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NEET2011Chemistryd and f Block ElementsActual

Acidified K ₂ Cr ₂ O ₇ solution turms green when Na ₂ SO ₃ is added to it. This is due to the formation of

Options

  1. ACrO ₄²⁻
  2. BCr ₂ ( SO ₃ )₃
  3. CCrSO ₄
  4. DCr ₂ ( SO ₄ )₃

Correct answer

D. Cr ₂ ( SO ₄ )₃

Step-by-step solution

array r K ₂ Cr ₂ O ₇+3 Na ₂ SO ₃+4 H ₂ SO ₄ 3 Na ₂ SO ₄ + K ₂ SO ₄+ Cr ₂ ( SO ₄ )₃+4 H ₂ O array

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