Think about this. Then let us know what you think and why! The answer should be obvious if you think about it.
A liquid in a stoppered flask is allowed to stand at constant temperature entil the liquid level in the flask remains constant. which condition then exists in the flask?
a. the rate of condensation is equal to the rate of evaporation
b. only liquid is evaporating
c. only vapor is condensing
d. the rate of condensation is greater tahn the rate of evaporation
Is it A because everything is remaining the same
of course you are right.
To answer this question, we need to understand the process of evaporation and condensation.
Evaporation occurs when a liquid turns into a gas, and it happens when the molecules at the surface of the liquid gain enough energy to break free from the liquid phase and become vapor. On the other hand, condensation is the process by which a gas or vapor turns into a liquid.
In the given scenario, the liquid is in a stoppered flask, and it's allowed to stand at a constant temperature until the liquid level remains constant. When the liquid level stops changing, it means that the rates of evaporation and condensation have reached an equilibrium.
If the rate of condensation were greater than the rate of evaporation, the liquid level in the flask would decrease over time. Conversely, if the rate of evaporation were greater than the rate of condensation, the liquid level would increase. However, since the liquid level remains constant, it means that the rate of evaporation is equal to the rate of condensation.
Thus, the correct answer is option a: the rate of condensation is equal to the rate of evaporation. This indicates that the system is in a state of equilibrium, with no net change in the amount of liquid or vapor present.