5. Compound formed when CO2 is passed through water is (i) H2CO3 (ii)

1.	5. Compound formed when CO2 is passed through water is (i) H2CO3 (ii) CH3COOH (iii) CaCO3 (iv) None of these 11 .
Answer» Answer: Reaction with limewater 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.

5. Compound formed when CO2 is passed through water is (i) H2CO3 (ii) CH3COOH (iii) CaCO3 (iv) None of these 11 .

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Reaction with limewater

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.

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5. Compound formed when CO2 is passed through water is (i) H2CO3 (ii) CH3COOH (iii) CaCO3 (iv) None of these 11 .​

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5. Compound formed when CO2 is passed through water is (i) H2CO3 (ii) CH3COOH (iii) CaCO3 (iv) None of these 11 .