explain why the oxygen gas displaces the water in the bottle explain why the oxy

Question

explain why the oxygen gas displaces the water in the bottle explain why the oxygen gas displaces the water in the bottle explain why the oxygen gas displaces the water in the bottle Explain why the pure oxygen gas can be collected by water displacement in an inverted bottle. oxygen gas displaces the water in the bottle. 2. The 3. After collecting pure oxygen in bottles #2-5 in Part A, the bottles are stored mouth up on the lab bench. Give two reasons why these bottles can be placed on the bench with the mouth up s 6 Pockets College Ruled

Explanation / Answer

1 Oxygen is collected by downward dispalcement of water and it displaces water because it is slightly soluble in water and it is denser by water.

Molar mass of water= 18 grams/ mole

Molar mass of Oxygen = 32 grams/ mole

Since the molar mass of oxygen is greater than molar mass of water, it is able to displace water.

2) Pure Oxygen is heavier than Air.

Molar Mass of pure oxygen is 32 grams/mole

Molar mass of Air= 28.97 grams/ mole.

Since molar mass of pure oxygen is more than air, it can be kept with mouth up.

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