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JAMB Chemistry 1992 Question 3

Question 3

Acids, Bases and Salts

How many moles of (H+) are there in 1 dm3 of 0.5 M solution of H2SO4?

  1. A.2.0 moles
  2. B.1.0 mole
  3. C.0.5 mole
  4. D.0.25 mole.
Show the answer and explanation

Answer: B (1.0 mole)

Explanation

1 dm3 of 0.5 M acid contains 0.5 mol of H2SO4. Each mole gives 2 moles of H+, so there is 1.0 mole of H+.