Question

A student set up the apparatus. Colourless fumes of hydrogen chloride were given off by the hydrochloric acid and colourless fumes of ammonia were given off by the aqueous ammonia. After a few seconds, white fumes were seen at point X in the tube.

The student repeated the experiment using a solution of methylamine, CH3NH2, in place of ammonia, NH3. The white fumes were seen at point Y in the tube, rather than at point X. Explain this difference.​

Answer 1

Answer:

Chemicals

Concentrated hydrochloric acid (CORROSIVE), a few cm3 (note 2)

880 ammonia solution (CORROSIVE, DANGEROUS FOR THE ENVIRONMENT), a few cm3 (note 2)

Acetone (FLAMMABLE), a few cm3 (optional, note 1)