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11/09/2021 7:18 pm
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(a) Give one example, with equation, of the displacement of hydrogen by a metal from an acid.
(b) Name two metals (other than zinc and iron) which can displace hydrogen from dilute hydrochloric acid?
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11/09/2021 7:22 pm
(a) Magnesium reacts with very dilute nitric acid to form magnesium nitrate and hydrogen gas.
Mg(s) + 2HNO3(aq) → Mg(NO3)2(aq) + H2(g)
Magnesium Nitric acid Magnesium nitrate Hydrogen
(b) Magnesium and aluminium.