Question

how would you test the presence of this gas of carbon dioxide.​

Answer 1

Answer:

The most effective way to test for CO2 is to bubble the gas through "limewater", a diluted solution of calcium hydroxide (slaked lime). When you bubble carbon dioxide through the solution, it forms a solid precipitate of calcium carbonate – chalk or limestone. Calcium carbonate is insoluble in water.

Answer 2

By using Calcium hydroxide.

If carbon dioxide gas is passed through dilute solution of calcium hydroxide white precipitate is formed.

Ca(OH)2 + CO2 = CaCO3 + H2O

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