Question

how to prepare oxygen and carbondioxide in labouratory

Answer 1

oxygen can be made in lab , hydrogen peroxide is poured into a conical flask containing some magnese oxide . the gas produced is collected in an upside down gas jar filled with water . it produces bubbles when hydrogen peroxide react with magnese

carbondioxide can be made in lab, whenever acids react with a carbonate it makes carbondioxide. to make carbondioxide, calcium carbonate and hydrochloric acid are used in labs. they are usually used because cheap and easy to make .

hope it helps u

Answer 2

carbon dioxide is produced whenever an acid reacts with a carbonate this make carbon dioxide easy to make in the laboratory . calcium carbonate and hydrochloric acid r usually used be oz they r cheap and easy to obtain

calcium carbonate + hydrochloric acid » calcium chloride + water + carbon dioxide

CaCo3(s) + 2HCL(aq) + CaCl2(aq) + CO2(g) + H2O(1)

carbon dioxide can be collected over water , as shown in the diagram

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