## Solids and Concentration

Talia Leano 2H
Posts: 83
Joined: Wed Sep 30, 2020 10:10 pm

### Solids and Concentration

Why don't solids have a concentration?

Coleman Morrow
Posts: 13
Joined: Wed Feb 19, 2020 12:20 am

### Re: Solids and Concentration

The concentration of a pure liquid or solid is just its density divided by its mass and if it doesn't change on either side of the equation, meaning none of it is dissolving, then there is no point in including it in the k equation.

JoshMoore2B
Posts: 100
Joined: Wed Sep 30, 2020 9:51 pm

### Re: Solids and Concentration

Talia Leano 2H wrote:Why don't solids have a concentration?

Solids aren't considered to have a concentration in terms of calculating equilibrium because they cancel out on both sides of the equation, or they don't have an effect on the equilibrium state of a reaction.

Emily Tieu 2K
Posts: 51
Joined: Thu Jan 07, 2021 12:17 am

### Re: Solids and Concentration

I believe it's because solids have a fixed volume and do not dissolve when put into a solvent. Therefore, the solid concentration remains unchanged and does not affect equilibrium.

Gian Boco 2G
Posts: 96
Joined: Wed Sep 30, 2020 9:36 pm

### Re: Solids and Concentration

Their volume does not change and they do not dissolve in solution

Dane_Beasley_1E
Posts: 74
Joined: Wed Sep 30, 2020 9:42 pm

### Re: Solids and Concentration

Solids do not have concentration because their volume is fixed and they do not dissolve in a solution.

Sarah Salam 1J
Posts: 55
Joined: Wed Sep 30, 2020 9:31 pm

### Re: Solids and Concentration

They don't dissolve or change volume, and so they don't affect equilibrium, so their concentration doesn't matter.

Thomas Gimeno
Posts: 95
Joined: Wed Sep 30, 2020 9:49 pm

### Re: Solids and Concentration

Concentration is the ratio of solute to solvent meaning the amount of something in solution compared to the amount of the solution itself. This doesn't really make sense for a solid because if I just hold some salt for example, there is no solute or solvent. However, Density is a measurement similar to concentration because density is the ratio of the amount of something to the amount of space it takes up.

Mehreen 3I
Posts: 100
Joined: Wed Sep 30, 2020 9:36 pm

### Re: Solids and Concentration

Talia Leano 2H wrote:Why don't solids have a concentration?

Solids have a fixed volume and so not dissolve in solutions. Hope this helped!