Question

state two methods used to check that given gas is CO2​

Answer 1

Answer:

Explanation:

bubble the gas through limewater. if it turns milky, it is co2.

you can also put a lighted splint in the gas. if it goes off, it is co2.

Answer 2

Explanation:

The most effective way to test for CO² is to bubble the gas through "lime water", 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.

Thus, if there is CO² present in the sample, the limewater will turn milky, cloudy white.

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