O-LevelChemistryStoichiometry5070/12 · Oct/Nov 2016 · Q321 Mark
When reacted with an excess of dilute hydrochloric acid, 0.002 moles of a metal M liberated 48 cm³ of hydrogen measured at r.t.p. Which equation is correct for this reaction?
A2M + 2H⁺ → 2M⁺ + H2
BM + H+ → M⁺ + H
CM + 2H⁺ → M2+ + H2
DM + 2H+ → M2+ + 2H
✓ Correct answer
C: M + 2H⁺ → M2+ + H2
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