scientific science?

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what is carbon dioxide + limewater?please give me the correct answer

2006-08-16 23:55:19 · 2 answers · asked by yvonne2to 1 in Science & Mathematics ➔ Chemistry

2 answers

At advanced level,

limewater is aqueous Calcium (II) hydroxide, Ca(OH)2 (aq)

CO2 (g) + Ca(OH)2 (aq) --> CaCO3 (s) +H2O (l)

CaCO3 is a white precipitate. Chemists do not call CaCO3 as chalky.

This is a test for carbon dioxide gas.

When carbon dioxide is passed into limewater, a white precipitate of calcium carbonate is seen.

2006-08-19 04:56:51 · answer #1 · answered by Simple 7 · 0⤊ 0⤋

when you blow through a straw into limewater the carbon dioxide in your breath make the limewater go cloudy (precipitate).

This precipitate is CaCO3. Calcium carbonate, like chalk.

2006-08-17 00:01:55 · answer #2 · answered by heidavey 5 · 1⤊ 0⤋