What is limewater?
An aqueous solution of calcium hydroxide.
AQA GCSE Combined Science: Trilogy (8464) — Chemistry — Higher · 5.8.2.3
Revise AQA GCSE Combined Science: Trilogy (8464) — Chemistry — Higher specification point 5.8.2.3, Test for carbon dioxide, with free active-recall flashcards. Flip through the set or review every question and answer below.
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What is limewater?
An aqueous solution of calcium hydroxide.
How is a gas tested with limewater?
Shake the gas with limewater or bubble it through the limewater.
What is the positive limewater test result for carbon dioxide?
Clear limewater turns milky or cloudy.
Why does limewater turn cloudy when carbon dioxide is present?
Carbon dioxide reacts with calcium hydroxide to form a fine solid precipitate of calcium carbonate.