Identify the formula of compound (B) formed in following reaction. (i) Lanthanoids (Ln) burnt in oxygen…

Identify the formula of compound (B) formed in following reaction. (i) Lanthanoids (Ln) burnt in oxygen forming compound (A) (ii) Compound (A) reacts with $\mathrm{CO}_{2}$ in excess to form compound (B)
  1. $\mathrm{LnO}_{2}$
  2. $\mathrm{Ln}_{2} \mathrm{CO}_{3}$
  3. $\mathrm{Ln}_{3}\left(\mathrm{CO}_{3}\right)_{2}$
  4. $\mathrm{Ln}_{2}\left(\mathrm{CO}_{3}\right)_{3}$

Solution

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

Asked in: MHT CET 2020 (13 Oct Shift 1)

Practice more Transition and Inner Transition Elements questions on Aicharya