Question

What are the likely physical states of (gas, liquid or solid):

i) bromine monofluoride ii) iodine monochloride

at room temperature? Explain using knowledge of the physical states of other halogens.

Answer 1

i) The physical state of bromine monofluoride (BrF) is gas at room temperature. At room temperature, bromine (Br₂) is liquid in the elementary state and fluorine (F₂) is gas in the elementary state. During the formation of bromine monofluoride (BrF), the reaction produces a gaseous BrF.

              Br₂(l) + F₂(g) → 2BrF(g)

ii) The physical state of Iodine Monochloride (ICl) is liquid at room temperature. At room temperature, bromine (I₂, solid) is solid in the elementary state and fluorine (F₂, Gas) is gas in the elementary state. During the formation of Iodine Monochloride (ICl), the product first form in a gaseous state and finally at room temperature, the product get stabilized in the liquid state.

I₂(s)+ Cl₂ (g)→ 2 ICl (l)