Question

5. What is lime water and what happens on passing co2 gas through it?
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Answer 1

When carbon dioxide is passed through lime water, it turns milky due to the formation of calcium carbonate

• Ca(OH)2(aq)+CO2(aq)→CaCO3(s)⏐↓+H2O(l)
• Calcium carbonate precipitates as a milky white precipitate.