3. Ammonia is absorbed on cotton on end ‘A’ whereas Hydrochloric acid is absorbed by cotton at‘B’end of hollow tube. ?(Hint:When we mix ammonia with Hydrochloricacid,whiteringofammoniumchlorideisformed)[usemassof ammonia as 17 u and mass of Hydrochloric acid as 36.5 u]
Answers
Answer: Diffusion of gases
Explanation:
Ammonia, also known as NH3, is a colorless gas with a distinct odor composed of nitrogen and hydrogen atoms.
Hydrochloric acid, also known as HCl, is a acid with a distinctive pungent smell composed of hydrogen and chlorine atoms.
ammonia, having a lower molecular weight than the hydrogen chloride, will diffuse faster and travel a greater length of the hollow tube. ammonia has a molar mass of 17.031 g/mol compared to 36.46 g/mol of hydrochloric acid.
Since hydrochloric acid has a larger molecular mass, hence it diffuses at a slower rate compared to ammonia. As a result, the white ring will be situated closer to the B end where HCl is absorbed.
Formation of white ring of ammonium chloride is given by:
NH3 (g) + HCl (g) → NH4Cl(s)
Ammonium chloride, also known as NH₄Cl is a white crystalline salt that is highly soluble in water.