Open Beaker [ENDORSED]

[Janice Xiao 1I]

If a reaction occurs in an open beaker, does that mean it's at constant pressure?

[Sungyoon_Baek_1A]

yes. since the open beaker is exposed to the open atmosphere and the atmosphere is very very large in comparison to the small beaker, the pressure is constant.

[Matthew 1C]

Yes because it can equilibriate with the pressure of the surroundings

[Vivian Nguyen]

Yes^, I believe so because the surroundings in an open beaker are so large that the pressure is constant /unchanging. I might be wrong, but I think this is when Dr.Lavelle used the examples about whether the temperature of the surroundings would be affected by an individual lighting a match. The pressure of an open system would not change either.

[Andrea ORiordan 1L]

All of the above are correct-- one more example I found helpful with regard to the difference between system and surroundings was the ocean analogy. If you add a bucketful of water to the ocean, it doesn't really change the volume or pressure.

[Amelia Georgius 1K]

Because the system is open it can therefore remain at a constant pressure with its surroundings because it can exchange both energy and matter to come to an equilibrium pressure state.