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Varren · Answer 1 · 2017-07-24T20:05:38+0000

(i) The pH of HCl is between 0 and 2.
(ii) the presence of Carbon Dioxide turns lime water milky or sees a white precipitate form on the surface of the lime water. Lime water is CaOH and when it reacts with Carbon Dioxide it forms a white solid (precipitate) Calcium Carbonate.

$Ca(OH)_(2) _((l)) + CO_(2) _((g)) -----\ \textgreater \ CaCO_(3) _((s)) + H_(2)O_((l))$

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