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Chemistry · May / June 2023 · Paper 12 · Question 28

5070Formulae

Which equation is correct?

  1. ACu(s) + O2(g) → 2CuO(s)
  2. BMg(s) + H2SO4(aq) → MgSO4(aq) + H2(g)
  3. CNa(s) + H2O(l) → NaO(aq) + H2(g)
  4. D2Zn(s) + 2HNO3(aq) → 2ZnNO3(aq) + H2(g)

As printed in the paper

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Correct answer: B. Mg(s) + H2SO4(aq) → MgSO4(aq) + H2(g)

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