Pressure and Volume

[Keon Amirazodi 3H]

How are pressure and volume related? Why does increasing volume decrease pressure and vice versa?

[Earl Garrovillo 2L]

They're inversely related. At constant temperature, increasing one will cause the other to decrease. Vice versa, decreasing one will increase the other. As for why, increasing pressure is the same as compressing a system (which effectively decreases the volume). Or when volume is increased, there is more space for gas particles to move which decreases the overall pressure.

[705340227]

When the volume decreases, there is a lot of gas in a very small space, so the pressure of the gas increases. When the volume increases, there is less gas in a large area so the pressure is lowered.

[Nathan Lao 2I]

They are inversely proportional, meaning if you increase one the other will decrease.

Let's say there's a box(of some volume) full of gas particles that are constantly moving and hitting the walls of the box. If you were to shrink the size of the box, the gas particles would hit the box more frequently, resulting in an increased pressure. If you were to do the opposite and expand the size of the box, the particles would collide with the box less(increased volume, lower pressure).

[Sonel Raj 3I]

If pressure increases, volume decreases, and vice versa. This is detailed in Boyle's law, which states, at a constant temperature, the volume of a gas is inversely proportional to its pressure. P1V1=P2V2 is an equation you can look at to better visualize this!

[Danielle DIS2L]

This is how I think about it. If I have a smaller container, it means that there is less space which means that the gas molecules would bump into each other more often whereas a bigger container, there is more space where the gas molecules would collide less often. Which is why a decrease in volume would result into an increase in pressure and an increase in volume would result into a decrease of pressure.

[Isaias Gomez D3A]

Pressure and volume are inversely proportional.

[RaniyaFeroz_1E]

They're inversely proportional. Increasing the pressure will decrease the volume.

[Kiara Phillips 3L]

From my understanding they are inversely proportional. In other words as one increases the other decreases.

[Juliana Rosales 1H]

They are inversely related!

[Ke Huang 2G]

The pressure and volume are inversely related.

[DominicMalilay 1F]

Pressure and volume always have an inverse relationship.

[Bai Rong Lin 2K]

They're inversely proportional, hence what you explained about one increase would lead to other decrease.

[Zihan Liu 2K]

I think it's because they are inversely proportional to each other. Also, not sure if the ideal gas law can be used here, but at least according to that equation, PV = nRT. R is a constant, n means amount of substance, and T means temperature. As long as nRT is constant, P*V would be constant. In order to keep P*V constant, when P increases, V would decrease, and vice versa.

[Nina Ellefsen 2D]

They're inversely proportional! This relationship can be shown mathematically with P1V1=P2V2 (assuming constant temperature and number of moles)

[Chinmayi Mutyala 3H]

For me, it's easy to understand the relationship between the two when you look at a balloon. If you have a large balloon (high volume), the particles inside have a lot more area to move around in which is why there's lower pressure. If the balloon is smaller, the particles are moving around in a smaller area so the pressure is higher.

[Sondia Luong 1C]

It's easier to remember how pressure and volume affect each other if I imagine gas particles. If you decrease volume, the pressure goes up because particles are pushed tighter together. I usually imagine a tiny box with a lot of dots in it running into each other! The same goes for when volume increases. Since there is more room for particles to move around, they won't collide against each other and therefore pressure will decrease.