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==Key Stage 3==
===Meaning===
[[Hydrochloric Acid]] is an [[acid]] made of one [[Hydrogen]] and one [[Chlorine]] [[atom]] with the [[Chemical ForumulaFormula|chemical formula]] HCl.
===About Hydrochloric Acid===
: [[Hydrochloric Acid]] with a [[concentration]] between 2[[Molarity|M]] and 6.5[[Molarity|M]] is an [[irritant]].
: [[Hydrochloric Acid]] with a [[concentration]] above 6.5[[Molarity|M]] is [[corrosive]].
: [[Hydrochloric Acid]] [[Chemical Reaction|reacts]] with [[metal]]s and [[base]]s to produce [[Chloride]] [[salt]]s.
====Hydrochloric Acid and Metals====
:[[Hydrochloric Acid]] + [[Sodium]] → [[Sodium Chloride]] + [[Hydrogen]]
:[[Hydrochloric Acid]] + [[Magnesium]] → [[Magnesium Chloride]] + [[Hydrogen]]
:[[Hydrochloric Acid]] + [[Aluminium]] → [[Aluminium Chloride]] + [[Hydrogen]]
====Hydrochloric Acid and Metal Oxides====
:[[Hydrochloric Acid]] + [[Sodium Oxide]] → [[Sodium Chloride]] + [[Water]]
:[[Hydrochloric Acid]] + [[Magnesium Oxide]] → [[Magnesium Chloride]] + [[Water]]
:[[Hydrochloric Acid]] + [[Aluminium Oxide]] → [[Aluminium Chloride]] + [[Water]]
====Hydrochloric Acid and Metal Carbonates====
:[[Hydrochloric Acid]] + [[Sodium Carbonate]] → [[Sodium Chloride]] + [[Carbon Dioxide]] + [[Water]]
:[[Hydrochloric Acid]] + [[Magnesium Carbonate]] → [[Magnesium Chloride]] + [[Carbon Dioxide]] + [[Water]]
:[[Hydrochloric Acid]] + [[Aluminium Carbonate]] → [[Aluminium Chloride]] + [[Carbon Dioxide]] + [[Water]]
==Key Stage 4==
===Meaning===
[[Hydrochloric Acid]] is an [[acid]] with the [[Chemical Formula|chemical formula]] HCl.
===About Hydrochloric Acid===
: [[Hydrochloric Acid]] [[Chemical Reaction|reacts]] with [[metal]]s and [[base]]s to produce [[Chloride]] [[salt]]s.
====Hydrochloric Acid and Metals====
:[[Hydrochloric Acid]] + [[Sodium]] → [[Sodium Chloride]] + [[Hydrogen]]
:2HCl + 2Na → 2NaCl + H<sub>2</sub>
:[[Hydrochloric Acid]] + [[Magnesium]] → [[Magnesium Chloride]] + [[Hydrogen]]
:2HCl + Mg → MgCl<sub>2</sub> + H<sub>2</sub>
:[[Hydrochloric Acid]] + [[Aluminium]] → [[Aluminium Chloride]] + [[Hydrogen]]
:6HCl + 2Al → 2AlCl<sub>3</sub> + 3H<sub>2</sub>
====Hydrochloric Acid and Metal Oxides====
:[[Hydrochloric Acid]] + [[Sodium Oxide]] → [[Sodium Chloride]] + [[Water]]
:2HCl + Na<sub>2</sub>O → 2NaCl + H<sub>2</sub>O
:[[Hydrochloric Acid]] + [[Magnesium Oxide]] → [[Magnesium Chloride]] + [[Water]]
:2HCl + MgO → MgCl<sub>2</sub> + H<sub>2</sub>O
:[[Hydrochloric Acid]] + [[Aluminium Oxide]] → [[Aluminium Chloride]] + [[Water]]
:6HCl + Al<sub>2</sub>O<sub>3</sub> → 2AlCl<sub>3</sub> + 3H<sub>2</sub>O
====Hydrochloric Acid and Metal Carbonates====
:[[Hydrochloric Acid]] + [[Sodium Carbonate]] → [[Sodium Chloride]] + [[Carbon Dioxide]] + [[Water]]
:2HCl + Na<sub>2</sub>CO<sub>3</sub> → 2NaCl + CO<sub>2</sub> + H<sub>2</sub>O
:[[Hydrochloric Acid]] + [[Magnesium Carbonate]] → [[Magnesium Chloride]] + [[Carbon Dioxide]] + [[Water]]
:2HCl + MgCO<sub>3</sub> → MgCl<sub>2</sub> + CO<sub>2</sub> + H<sub>2</sub>O
:[[Hydrochloric Acid]] + [[Aluminium Carbonate]] → [[Aluminium Chloride]] + [[Carbon Dioxide]] + [[Water]]
:6HCl + Al<sub>2</sub>(CO<sub>3</sub>)<sub>3</sub> → 2AlCl<sub>3</sub> + 3CO<sub>2</sub> + 3H<sub>2</sub>O