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Question

(a) Give one example, with an 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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Solution

(a) Sodium displaces hydrogen from dilute hydrochloric acid.

2Na(s)+2HCl(aq)2NaCl(aq)+H2(g)

(b) Magnesium and aluminium are two metals that can displace hydrogen from dilute hydrochloric acid.


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