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JAMB Chemistry 1993 Question 30

Question 30

Acids, Bases and Salts

NaCl(s) + H2SO4(l) → HCl(g) + NaHSO4(s). In the reaction above, H2SO4 behaves as

  1. A.a strong acid
  2. B.an oxidizing agent
  3. C.a good solvent
  4. D.a dehydrating agent
Show the answer and explanation

Answer: A (a strong acid)

Explanation

Concentrated H2SO4 is a strong, non-volatile acid. It donates H+ to chloride ions and drives off the more volatile HCl gas, leaving NaHSO4.