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Which of the following pairs of reagents react to produce hydrogen?

Chemistry
WAEC 2001

Which of the following pairs of reagents react to produce hydrogen?

  • A. Zinc and concentrated trioxonitrate (V) acid
  • B. Water and calcium dicarbide
  • C. Copper and dilute hydrochloric acid
  • D. Magnesium and dilute tetraoxosulphate (VI) acid
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Correct Answer: Option D
Explanation

When magnesium reacts with dilute sulfuric acid, it produces magnesium sulfate and hydrogen gas.

The chemical equation for this reaction is:

                      Mg(s) + H2SO4(aq) → MgSO4(aq) +  H2(g)

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