Question

Which of the following gases would you expect to deviate from ideal behaviour under conditions of low temperature F₂Cl₂ , or Br₂ ? Explain.

Answer 1

(i). Bromine deviates (Br₂) from the ideal gas maximum than Cl₂ and F₂ . Because Br₂ has biggest size (atomic weight 79.9) provides maximum attraction between bromine molecules which is directly proportional to the size of the molecule and the boiling point of the liquid made from those molecules.

(ii). Br₂ deviates from ideal behaviour because it has largest atomic radii compared to Cl₂ and F₂ . So it contains more electrons than other two, and the Vander Waals forces are stronger in Br₂ than in Cl₂ and F₂ . So Br₂ deviates from ideal behaviour.