The molecules in carbon dioxide are heavier than those in nitrogen and oxygen. So what do you think will happen to the water in the measuring tube, when you use carbon dioxide? Explain your answer
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Carbon dioxide has one carbon atom and two oxygen atoms, and a molecular weight of 44 grams per mole ( a certain number of molecules). The oxygen in the air is actually O2, or molecular oxygen, with a molecular weight of 32. Hence, carbon dioxide has a higher density, or is heavier than oxygen.
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Carbon dioxide is more soluble in water as compared to oxygen gas. Some fraction of carbon dissolved forms carbonic acid with water and it is readily dissolvable because of formation of strong hydrogen bonds.
As the molecules in carbon dioxide are heavier the amount in the measuring tube will increase when we use carbon dioxide in water.
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