Testing for carbonate

Testing for carbonate

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Credit: TREVOR CLIFFORD PHOTOGRAPHY/SCIENCE PHOTO LIBRARY

Caption: Testing for carbonate. Test tube containing a compound added to acid (left) producing a gas which is bubbled through limewater (calcium hydroxide solution), turning it milky. Carbon dioxide (CO2) passed into limewater produces a milky suspension of calcium carbonate. Therefore the gas produced here is carbon dioxide. This shows that the compound added to the acid is a metal carbonate as a metal carbonate added to acid produces a metal salt, water and carbon dioxide.

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Keywords: acid, apparatus, base, bases, basic, biological, biology, calcium hydroxide solution, carbon dioxide, carbonate, chemical, chemistry, co2, demonstrating, demonstration, device, equipment, experiment, experimenting, glassware, lime water, lime-water, limewater, metal, neutralisation, neutralising, no-one, nobody, producing, production, reacting, reaction, science education, still life, still-life, test tube, testing, tubing

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