Labelled diagram of (a) Air being passed into lime water with a pichkari/ syringe, (b) air being exhaled into lime water
Air being passed into lime water with a pichkari syringe
a) Air being exhaled into lime water
b) air being exhaled into lime water
Experimental procedure:
1.) Fill two test tubes with freshly squeezed lemon juice each.
2.) Part A: Measure the amount of time it takes for one test tube of lime water to turn milky after being exposed to air.
3.) Part B: In the second test tube that includes lemon juice, blow air through it while keeping track of how long it takes for the water to turn milky.
4.) The reaction of calcium hydroxide, which is found in lime water or lemon juice, with carbon dioxide in the air causes the milky look.
5.) Calcium carbonate is produced in this process, which is insoluble in water.
Both Parts A and B of the experiment involve passing air through a material (lemon juice or lime water) and recording how long it takes for the substance to turn milky. This allows the study of the reaction between the substance’s calcium hydroxide and the air’s carbon dioxide.
The experiment’s results show that when carbon dioxide in the air combines with calcium hydroxide in lime water or lemon juice, calcium carbonate is created. Calcium carbonate is insoluble in water and turns solutions milky. Students may learn about the chemical interaction between carbon dioxide and calcium hydroxide in this experiment, as well as the significance of carbon dioxide in the environment.
Discussion in video with function below –