Question

Name the compound used for testing CO2 gas?​

Answer 1

Answer:

calcium carbonate

The compound used for testing of co2 gases is Ca(OH)2. Lime water is used for the detection of Carbon dioxide. Lime water is basically a calcium compound called calcium hydroxide with molecular formula Ca(OH)2. When Carbon dioxide is pass through it, it turns milky due to the formation of calcium carbonate.

Explanation:

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Answer 2

The compound used for testing CO₂ gas is Limewater.

• Limewater is the aqueous solution of calcium hydroxide Ca(OH)₂.

• It is a clear and colorless liquid.

• It is used to neutralize excess acidity.

• To test CO₂ gas, carbon dioxide is bubbled through the limewater.

• If it forms a solid precipitate of calcium carbonate, then it confirms that CO₂ gas is present.