- #1
AndjpANDJ
- 4
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Ok this is solely for my interest. I should know this if I were taking Grade 12 Chemistry, but I haven't had this course in two years, and neither have I continued in pure science since then so please if you know better tell me if this is correct AND if it is only so because the case is of a closed system:
You are cooking water, but the water is in a pot that is in a sealed box (without pores, but the lid is closed, like pretend it is a clear plastic box).
The water starts to evaporate because it is undergoing an endothermic reaction from the cooking fire (but the air becomes hotter because it is a closed system and has no where to escape to).
The air becomes saturated with water vapour and this starts to condense on the walls. Since it's condensing; does this mean that it is suddenly an exothermic reaction? Provided that the heat source continues; will this water continue evaporating and condensing back? Which reaction will happen quicker, or will it eventually do so at a constant rate becomes it ends up in equilibrium?
Now; we take away the heat source. I guess it'll end up turning back into liquid, until it condenses just enough for a natural rate of evaporation and condensation (like when you close a waterbottle cap).
You are cooking water, but the water is in a pot that is in a sealed box (without pores, but the lid is closed, like pretend it is a clear plastic box).
The water starts to evaporate because it is undergoing an endothermic reaction from the cooking fire (but the air becomes hotter because it is a closed system and has no where to escape to).
The air becomes saturated with water vapour and this starts to condense on the walls. Since it's condensing; does this mean that it is suddenly an exothermic reaction? Provided that the heat source continues; will this water continue evaporating and condensing back? Which reaction will happen quicker, or will it eventually do so at a constant rate becomes it ends up in equilibrium?
Now; we take away the heat source. I guess it'll end up turning back into liquid, until it condenses just enough for a natural rate of evaporation and condensation (like when you close a waterbottle cap).