2.38 Describe tests for anions

i) USING DILUTE NITRIC ACID & SILVER NITRATE SOLUTION (depending on the precipitate)

• Chloride ions (Cl-) + nitric acid + silver nitrate > white precipitate 
• Precipitate = silver chloride
• Bromide ions + nitric acid + silver nitrate > cream precipitate 
• Precipitate = silver bromide
• Iodide ions + nitric acid + silver nitrate > yellow precipitate 
• Precipitate = silver iodide

ii) USING DILUTE HYDROCHLORIC ACID & BARIUM CHLORIDE SOLUTION

• Sulphate ions + hydrochloric acid + barium chloride > white precipitate
• SO4(2-) + HCl + BaCl2 (2+) > BaSO4
• Precipitate = barium sulphate

iii) USING DILUTE HYDROCHLORIC ACID (& identifying if CO2 is produced)

• Carbonate + hydrochloric acid > salt + water + carbon dioxide
• Test for CO2:
• When bubbled through lime water, will turn it cloudy