passwella.
Menu

JAMB Chemistry 1984 Question 20

Question 20

Carbon and its Compounds

Lime-water, which is used in the laboratory for the detection of carbon (IV) oxide, is an aqueous solution of

  1. A.Ca(OH)2
  2. B.CaCO3
  3. C.CaHCO3
  4. D.CaSO4
  5. E.N2CO3.
Show the answer and explanation

Answer: A (Ca(OH)2)

Explanation

Lime-water is a solution of calcium hydroxide. CO2 turns it milky by forming insoluble calcium carbonate.