Changes

====Halides====

The test for [[Halide]] [[anion]]s begins by adding dilute [[Nitric Acid]] to remove any possible [[Carbonate]]s. Then [[Silver Nitrate]] is added to form a [[precipitate]] of [[Silver Halide]].

<math>NaCl(aq) + AgNO_3(aq) → NaNO_3(aq) + AgCl(s)</math>

: A white [[precipitate]] is formed.

<math>NaI(aq) + AgNO_3(aq) → NaNO3(aq) + AgI(s)</math>

: A yellow [[precipitate]] is formed.

====Sulphates====

The test for [[Sulphate]] [[anion]]s begins by adding dilute [[Hydrochloric Acid]] to remove any possible [[Carbonate]]s. Then [[Barium Chloride]] is added to form a [[precipitate]] of [[Barium Sulphate]].