Question

what is the limewater test for detection of carbon dioxide carbon dioxide gas produced in this reaction is passed through lime water those changes to milk colour due to the formation of calcium carbonate

Answer 1

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Limewater is the common name for a diluted solution of calcium hydroxide. Calcium hydroxide, Ca(OH)2, is sparsely soluble in water (1.5 g/L at 25 °C[1]). Pure limewater is clear and colorless, with a slight earthy smell and an alkaline bitter taste of calcium hydroxide. The term lime refers to the alkaline mineral, and is unrelated to the acidic fruit.

Limewater is prepared by stirring calcium hydroxide in pure water and filtering off the excess undissolved Ca(OH)2. When excess calcium hydroxide is added to limewater, a suspension of calcium hydroxide particles results, giving it a milky aspect, in which case it has the common name of milk of lime.

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Answer 2

Answer:

when carbon dioxide gas is passed through lime water, it turns milky due to the formation of a milky suspension of calcium carbonate. carbon dioxide is produced by the action of dilute HCL on sodium carbonate ,carbon dioxide gas which produced in this reaction is passed through lime water that changes to a milky colour due to formation of calcium carbonate.