1 markThe Mole Concept
CAPE Chemistry Unit 1 · 2017 · Paper 1 · Question 3
The ionic equation for the reaction of magnesium with hydrochloric acid is Mg(s) + 2H⁺(aq) → Mg²⁺(aq) + H₂(g). The molar volume of a gas at r.t.p. = 24 dm³.
The volume of gas produced when 1.2 g of Mg reacts with HCl at r.t.p is
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