When we exhale we give out a colourless gas. This gas is added to soft drinks to give them a
tangy taste.
a) How can this gas be tested in the lab?
b) Give a word equation to show how this gas can be produced?
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1) When we exhale we give out a colourless gas. This gas is added to soft drinks to give them a tangy taste. How can this gas be tested in the lab?
Answer: When carbon dioxide, CO2, enters the limewater, the limewater becomes cloudy. When you exhale into the bottle, the limewater will turn cloudy.
2) When we exhale we give out a colourless gas. This gas is added to soft drinks to give them a tangy taste. Give a word equation to show how this gas can be produced?
Answer: H2CO3 → H2O + CO2,
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