because of the chemical reaction between lime water (calcium hydroxide solution) and carbon dioxide which produces insoluble calcium carbonate and water
Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O(l)
If a gas is present in limewater, such as carbon dioxide, it will react with the limewater to form a white precipitate of calcium carbonate. This reaction causes the limewater to become cloudy or milky in appearance. It is a common test for the presence of carbon dioxide gas.
To test for carbon dioxide gas produced when calcium carbonate reacts with acid, you can bubble the gas through limewater. If carbon dioxide is present, it will turn the limewater cloudy or milky due to the formation of calcium carbonate.
At the end of an experiment, limewater will turn cloudy if carbon dioxide was present in the environment, causing it to react with the calcium hydroxide in limewater to form calcium carbonate, which is insoluble and appears as a white precipitate. If there was no carbon dioxide present, limewater will remain clear.
You can test for carbon dioxide in a thermal decomposition reaction by passing the gas produced through limewater. If carbon dioxide is present, the limewater will turn cloudy due to the formation of calcium carbonate. Alternatively, you can use pH indicator paper, which will turn from blue to green or yellow in the presence of carbon dioxide.
If there is oxygen in limewater, it would stay clear. Limewater (calcium hydroxide solution) is typically used to detect the presence of carbon dioxide. If carbon dioxide is present, it forms a white precipitate of calcium carbonate, turning the limewater cloudy or milky.
Limewater. if carbon dioxide is present, limewater will turn milky/cloudy
If a gas is present in limewater, such as carbon dioxide, it will react with the limewater to form a white precipitate of calcium carbonate. This reaction causes the limewater to become cloudy or milky in appearance. It is a common test for the presence of carbon dioxide gas.
To test for carbon dioxide gas produced when calcium carbonate reacts with acid, you can bubble the gas through limewater. If carbon dioxide is present, it will turn the limewater cloudy or milky due to the formation of calcium carbonate.
Limewater - if you bubble Carbon Dioxide through limewater it will go cloudy!
At the end of an experiment, limewater will turn cloudy if carbon dioxide was present in the environment, causing it to react with the calcium hydroxide in limewater to form calcium carbonate, which is insoluble and appears as a white precipitate. If there was no carbon dioxide present, limewater will remain clear.
to test for carbon dioxide is already dissolved in limewater , after this shake up the test tube , is it be that carbondioxide is present then two things will happen : 1) the limewater will turn cloudy as co2 is a precipatate is this solution 2)the limewater will begin to show efferevescence now we know gas is present if these two thing happen then there is an extremly high chance that co2 is present.
Blow it through limewater. If the limewater turns "milky" or "cloudy" (a white substance is shown) then Carbon Dioxide is present. If nothing happens, then Carbon Dioxide is not present in your solution.
Bubbling through limewater. The gas is present if the limewater turns cloudy :)
Limewater turns from 'colourless' to 'cloudy/milky' when Carbon Dioxide is present.
It goes cloudy.
Carbon dioxide (CO2)
the limewater should go cloudy! i'm not 100percent sure