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Question
Identify only the anion present in the following compound:
The compound, on heating, produces a colourless, odourless gas which turns lime water milky and has no effect on acidified potassium dichromate solution.
Solution
The anion present is carbonate \[\ce{CO_3^{2−}}\]. Heating the appropriate component causes \[\ce{CO2}\] to be released, turning lime water milky and not affecting acidified potassium dichromate solutions.
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