### Notation

Posted:

**Fri Jan 11, 2019 10:36 pm**What is the correct notation for computing the partial pressure of gases, is it more correct to use brackets versus parenthesis when doing a problem of this sort?

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=123&t=39711

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Posted: **Fri Jan 11, 2019 10:36 pm**

What is the correct notation for computing the partial pressure of gases, is it more correct to use brackets versus parenthesis when doing a problem of this sort?

Posted: **Fri Jan 11, 2019 11:03 pm**

Brackets denote concentration and partial pressure is not measured by concentration so I would assume that parentheses would be best when you are dealing with partial pressures.

Posted: **Fri Jan 11, 2019 11:07 pm**

Yes, my TA usually uses parenthesis or nothing at all when doing a problem with partial pressure. With concentration, brackets are always used.

Posted: **Sat Jan 12, 2019 3:06 pm**

So partial pressure is parentheses and concentration is brackets?

Posted: **Sat Jan 12, 2019 3:12 pm**

Brackets would denote concentration. Therefore, it would be a better idea to use either parenthesis or nothing at all for partial pressure to minimize confusion.

Posted: **Sat Jan 12, 2019 3:58 pm**

Brackets represent concentration, so I've seen them used in Kc problems, while I've seen both parentheses and nothing used with equilibrium problems concerning partial pressure