passwella.
Menu

JAMB Chemistry 2011 Question 31

Question 31

Halogens

The impurities formed during the laboratory preparation of chlorine gas are removed by

  1. A.H2O
  2. B.NH3
  3. C.H2SO4
  4. D.HCl
Show the answer and explanation

Answer: A (H2O)

Explanation

The main impurity is hydrogen chloride gas, which is removed by bubbling the chlorine through water (conc. H2SO4 then only dries it).