Question

In an investigation to see the effect heating had on gases, a student heated a round-bottomed flask containing air using a hairdryer as shown in the diagram.

(i) What would you expect the student to have seen when the flask was heated?
(ii) What conclusion can you draw from this investigation?

Answer 1

Answer:

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Explanation:

(i)Due to the push of the hot wind from the hairdryer, the air inside the flask must have been released through the tube into the water. This must have caused bubbles to release inside the water. After some time because of the empty space in the flask the water from the container must have been absorbed into the empty flask.

(ii)From this investigation we can conclude that the pushing of air in one direction would result in pushing of gases through the tube to the water container. When the space in the flask is empty then water will be absorbed in space of the air. (This would show the releasing and absorption of gases in water).

Answer 2

Answer:

(i) Air bubbles entering the water trough from the flask's mouth.

• The air inside the flask must have been expelled via the tube into the water as a result of the hairdryer's hot wind pushing on it.
• The water must have started to bubble as a result of this.
• The water from the container must have eventually been absorbed into the empty flask due to the empty space in the flask after some time.
• Therefore, we can infer that a portion of the gas that was heated did escape from the flask with a circular bottom.

(ii) We can conclude that, heated air gets expanded.

• The kinetic energy of the gas molecules increases as a result of the heating process.
• The volume of the gas increases as a result of this.
• Due to the flask's constant capacity, a portion of the gas emitted from the round bottom flask increased in volume.
• As a result of this experiment, we may draw the conclusion that forcing air in one direction will force gases through the tube and into the water container.
• Water will be absorbed into the air when the flask is completely empty.
• This would demonstrate how gases are released and absorbed by water.

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