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MHT CET202013 Oct 2020Morning ShiftChemistryd and f Block ElementsActual

Identify the formula of compound (B) formed in following reaction. (i) Lanthanoids (Ln) burnt in oxygen forming compound (A) (ii) Compound (A) reacts with CO ₂ in excess to form compound (B)

Options

  1. ALnO ₂
  2. BLn ₂ CO ₃
  3. CLn ₃ ( CO ₃ )₂
  4. DLn ₂ ( CO ₃ )₃

Correct answer

D. Ln ₂ ( CO ₃ )₃

Step-by-step solution

4Ln+3O2?2Ln2O3 ?Ln2O3 reacts with CO2 in excess to form Ln2(CO3)3

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