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JEE Main levelSingle correct optionDifficulty 2 of 3mt171

In the Mond process the volatile carbonyl is formed and decomposed respectively at about

  1. A330-350 K and 330-350 K, using electrolysis for decomposition
  2. B330-350 K and 450-470 K
  3. C450-470 K and 330-350 K
  4. D800 K and 1200 K

Answer: B

Formation of is exothermic with a decrease in moles of gas, so it is favoured at low temperature (330-350 K). The reverse reaction is favoured at 450-470 K and gives pure nickel.
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