JAMB Chemistry 1983 Question 45

Question 45

Solubility and Solutions

Which of the following statements is FALSE?

  1. A.Copper (II) ion can be reduced to copper (I) ion by hydrochloric acid and zinc.
  2. B.Sodium metal dissolves in water giving oxygen
  3. C.Nitrogen is insoluble in water
  4. D.Carbondioxide is soluble in water
  5. E.Lead has a higher atomic weight than copper
Show the answer and explanation

Answer: B (Sodium metal dissolves in water giving oxygen)

Explanation

Sodium reacts with water to give sodium hydroxide and hydrogen, not oxygen.