## Pressure vs. Volume

Jose Robles 1D
Posts: 100
Joined: Fri Aug 02, 2019 12:15 am

### Pressure vs. Volume

In terms of direction, how does each factor effect the reaction's direction? I'm curious because they seem quite similar but I have trouble differentiating the two in term of change.

J Medina 2I
Posts: 102
Joined: Wed Sep 25, 2019 12:17 am

### Re: Pressure vs. Volume

A change in volume will also directly affect the pressure of a system. A decrease in volume will lead to a higher pressure and an increase in volume will lead to lower pressure. Thinking of the equation PV=nRT is helpful since it shows how pressure and volume are inversely proportional.

KarineKim2L
Posts: 100
Joined: Fri Aug 30, 2019 12:16 am

### Re: Pressure vs. Volume

If you decrease the volume, pressure will increase. You can think of this logically; if you have a certain amount of material that takes up a certain amount of space, and you try to squish it into a smaller space, the pressure will increase.

JohnWalkiewicz2J
Posts: 103
Joined: Thu Jul 11, 2019 12:17 am
Been upvoted: 1 time

### Re: Pressure vs. Volume

Assuming that moles (n) is constant, if you increase the pressure, volume will decrease, and whatever side has more moles of reactants/products, the reaction will shift to the opposite.

Anish Natarajan 4G
Posts: 51
Joined: Thu Jul 25, 2019 12:16 am

### Re: Pressure vs. Volume

More V/Less P=shift to side with more mols and vice versa

kendal mccarthy
Posts: 109
Joined: Wed Nov 14, 2018 12:22 am

### Re: Pressure vs. Volume

One trick I like to use is to look at the relationship between the variables of the PV=nRT equation. because P and V are on the same side of the equation that means they have an inverse relationship. This means an increase in one leads to a decrease in the other and vice versa.

Gabriel Ordonez 2K
Posts: 113
Joined: Sat Jul 20, 2019 12:15 am

### Re: Pressure vs. Volume

Pressure and volume are inversely related. An increase in volume decreases pressure and decrease in volume increases pressure, so think of them this way when approaching equilibrium shifts. The side with more moles of gas will shift to the other reactionary side with an increase in pressure or decrease in volume. The opposite happens with the opposite conditions.

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