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Hydrogen chloride dissolves in water, fo...

Hydrogen chloride dissolves in water, forming an acidic solution.
Give two distinct tests (apart from using an indicator) you would carry out with this solution to illustrate the typical properties of an acid.

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(a) HCl(aq) decomposes sodium carbonate and liberates carbon dioxide.
`Na_2CO_2 + 2HCl rarr 2NaCl + H_2O + CO_2`
  (b) HCl(aq) neutralizes sodium hydroxide.
`NaOH + HCl rarr NaCl + H_2O`
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