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Many reactions can be used to produce carbon dioxide gas. Marble chips or other carbonate
rock treated with dilute acid provides a good source. The gas is not too soluble to be
collected by water displacement, as shown above for the preparation of hydrogen.
Alternatively, carbon dioxide can be collected by displacing air from dry bottles. To test if
the bottle is full, lower a lighted splint or taper into the top of the jar. If the flame is
extinguished at the entrance as at (ii), then the jar is full. Put a cardboard cover over the
top to prevent diffusion of the gas. Check the density of the carbon dioxide by pouring" the
gas into another bottle either above or below the first bottle. Find where the gas is by
testing with a lighted splint. Note: The presence of carbon dioxide can be confirmed by the
fact that limewater becomes "milky" when the gas is Passed through it.
sharon kalunda answered the question on April 12, 2019 at 07:31
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