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I'm no specialist on this, but I'd say CO2. Leaving CaO as a residue of course...

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Q: If you heat calcium carbonate what gas will be given off?
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What gas is given off when calcium carbonate is heated?

Carbon Dioxide is given off. (CO2)


When potassium carbonate is heat what gas is given off?

Oxygen


When calcium carbonate is heated what gas is given off?

carbon dioxide is produced when it is heated


Why do we test the gas given off with limewater?

Limewater (calcium hydroxide) react with carbon dioxide and form insoluble, white precipitate of calcium carbonate.


What gas is given off when a piece of marble or limestone is heated?

The gas is Carbon dioxide, formed by the decomposition of Calcium carbonate it the Marble or Limestone


What happens when calcium is heated with carbon?

Here is the reaction:CaCO3(s) ==heat==> CaO(s) + CO2(g) So, when calcium carbonate is heated, you get calcium oxide and carbon dioxide gas.


When Calcium carbonate is heated .?

It decomposes into calcium oxide and carbon dioxide...


What gas does hydrochloric acid produce when mixed with calcium carbonate?

The gas released in the reaction of calcium carbonate with hydrochloric acid is carbon dioxide. CaCO3 + 2 HCl = CaCl2 + CO2 + H2O


What happen when carbon dioxide gas is passed though lime water which compound is formed?

Calcium bicarbonate and calcium carbonate.


Is calcium carbonate a gas?

No. It is a white solid substance.


What is the gas formed when calcium carbonate decomposes?

CO2


How does calcium carbonate influence weld quality?

Calcium carbonate is decomposed and the products CO/CO2 form a gas shielding for the weld.