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What is lime water test for the detection of carbon dioxide gas |
| Answer» Limewater Test\xa0- To check for carbon dioxide in your breath. Using\xa0lime water\xa0is a fun and easy way to\xa0test\xa0for the presence of carbon dioxide. The exhaled carbon dioxide is used to produce a precipitate of calcium carbonate with the\xa0lime water.\xa0The most effective\xa0way to test\xa0for CO2\xa0is to bubble the\xa0gas\xa0through "limewater", a diluted solution of calcium hydroxide (slaked lime). When you bubble\xa0carbon dioxide\xa0through the solution, it forms a solid precipitate of calcium carbonate – chalk or limestone. Calcium carbonate is insoluble in water. Carbon dioxide reacts with\xa0calcium\xa0hydroxide solution to produce a white precipitate of\xa0calcium\xa0carbonate. Limewater is a solution of\xa0calcium\xa0hydroxide. If carbon dioxide is bubbled through limewater, the limewater turns milky or cloudy white. | |