Chemistry
State how you would prove that HCl contains :
(i) hydrogen – using an active metal below magnesium
(ii) chlorine – using an oxidising agent not containing lead.
Hydrogen Chloride
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Answer
(i) Fe + 2HCl ⟶ FeCl2 + H2
(ii) MnO2 + 4HCl ⟶ MnCl2 + 2H2O + Cl2
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