Question

When carbon dioxide is passed through lime water (calcium hydroxide).
chemical reaction takes place and a white precipitate
of calcium carbonate is obtained.Identify the reactants in the above chemical change.
i) Identify the cation and anion present in the product obtained in
the above chemical change.​

Answer 1

Answer:

Carbon dioxide reacts with limewater (a solution of calcium hydroxide, Ca(OH) 2), to form a white precipitate (appears milky) of calcium carbonate, CaCO 3. Adding more carbon dioxide results in the precipitate dissolving to form a colourless solution of calcium hydrogencarbonate.