Chemistry
Identify only the anion present in the following compound:
(a) The compound on heating produces a colourless, odourless gas which turns lime water milky and has no effect on acidified potassium dichromate solution.
(b) The solution of the compound which on treating with concentrated sulphuric acid and freshly prepared ferrous sulphate solution produces a brown ring.
Practical Chemistry
ICSE 2024
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Answer
(a) The gas that turns lime water milky is carbon dioxide. Since the gas produced is CO2, the anion in the compound is carbonate (CO32-).
(b) The brown ring test indicates the presence of nitrate ions (NO3-).
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