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Bubbling the gas into limewater is the classic test for CO2.

Limewater is a saturated solution of Ca(OH)2. When CO2 is dissolved it reacts to produce insoluble CaCO3 and the solution turns cloudy.

Ca(OH)2(aq) + CO2(aq) --> CaCO3(s) + H2O(l)

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What of these will show that a gas is carbon dioxide?

The gas can be identified as carbon dioxide using a limewater test, where the gas is bubbled through limewater causing it to turn cloudy. Additionally, a carbon dioxide gas sensor can detect the presence of carbon dioxide in the air. Chemical tests such as reacting the gas with sodium hydroxide can also confirm the presence of carbon dioxide.


Why do bubbles come out when you mix carbon dioxide and limewater?

Bubbles form when carbon dioxide gas dissolves in the limewater solution, creating a chemical reaction that forms calcium carbonate. The formation of calcium carbonate is visible as the bubbles of carbon dioxide gas are released, giving the appearance of bubbles forming in the solution.


How would you test a sample of gas to see if it contained carbon dioxide?

take the gas atach it to the flask with limewater....if carbon dioxide is present then it will turn cloudy...thats the answer for test of carbon dioxide i think the answer your looking for is bromthymol blue


What test could you do to see if there is Sodium Carbonate Gas?

Sodium Carbonate is not a gas it is a solution. I think you mean how can you test for Carbon Dioxide - bubble it though limewater and you will get Sodium Carbonate.


Why can you see the movement of nitrogen dioxide gas in a container but not carbon dioxide?

You can see the movement of nitrogen dioxide gas because it is a more polar molecule and interacts with light differently. Carbon dioxide is non-polar and does not interact strongly with light to be visible.


What do you see when you see your breath on cold day?

carbon dioxide as a gas


What colour is carbon dioxide at room temperature?

You can't see Carbon Dioxide at room temperature.


Purpose of lime water with marble chip?

Lime water is used in an experiment to test if carbon dioxide is produced from acid reacting with a marble chip. If you see a calcium carbonate in your lime water at the end of the reaction, you will know that it produced the gas, carbon dioxide.


How would you test a gas to see if it is carbon dioxide?

Carbon dioxide gas is transparent and under normal conditions you do not see it. However, it does form visible bubbles in carbonated beverages. If you put frozen carbon dioxide ("dry ice") in water, the carbon dioxide that bubbles out of the water will look like fog, because it is very cold and causes moisture in the air to condense. But the fog will dissipate and the carbon dioxide will again become invisible.


Can you see carbon dioxide rising from fire?

Nope - the gas is colourless !


Which state of matter is carbon dioxide?

It exists either as a gas as carbon dioxide or CO2, or it is dissolved in water as H2CO3 (note that if you add the formulas for water and carbon dioxide, you get carbonic acid: H2O + CO2 --> H2CO3). You cannot have pure carbonic acid that is not in the presence of water, and thus H2CO3 exists ONLY as a dissolved solution in water.


If the gas was carbon dioxide what would you see?

it will make abig flame that it might hirt you