Carbon Dioxide Test

Carbon Dioxide Test

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Caption: Carbon dioxide test. Lime water is a saturated calcium hydroxide (Ca(OH)2) solution. When carbon dioxide (CO2) is bubbled through lime water, calcium carbonate (CaCO3) precipitates out of solution giving the solution a cloudy appearance. The reaction is: Ca(OH)2(aq) + CO2(g) -> CaCO3(s) + H2O(l). This series shows the solution becoming progressively cloudy as carbon dioxide is being bubbled through a drinking straw.

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Keywords: beaker, bubbles, bubbling, caco3, calcium, caoh2, carbon dioxide, carbonate, chemical, chemistry, cloudy appearance, co2, green straw, hydroxide, lime water, limewater, precipitate, precipitation, reaction, salt, sequence, series, solution, straw, test

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