## When do we change PV=NRT into deltas?

$PV=nRT$

Posts: 100
Joined: Sat Jul 20, 2019 12:15 am

### When do we change PV=NRT into deltas?

I know that sometimes we can manipulate the equation to get deltas, however, what specifically gets turned into delta?

Maia_Jackson_2C
Posts: 101
Joined: Fri Aug 30, 2019 12:17 am

### Re: When do we change PV=NRT into deltas?

I think you can change one variable to delta if you change another variable on the other side of the equal sign to delta.

Ryan 1K
Posts: 101
Joined: Fri Aug 09, 2019 12:15 am

### Re: When do we change PV=NRT into deltas?

It essentially depends on the problem. Whichever factor is held constant, you can turn the others into deltas. For example, in an isothermal, irreversible reaction, the temperature stays the same, so you can use $\Delta$V and $\Delta$P since they change.

sbeall_1C
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### Re: When do we change PV=NRT into deltas?

If you change a variable on one side of the equation to a delta, so either delta P or delta T, you have to change a variable on the other side of the equation, so it would either be delta T or delta n. There cannot be a delta R as this is a constant. You can use the information given in the problem to determine which one to change to delta and which one to keep constant. Hope this helps!

Jaklin Astvatsatryan
Posts: 91
Joined: Wed Sep 18, 2019 12:18 am

### Re: When do we change PV=NRT into deltas?

When changing a variable to a delta, you must make sure to change a variable on the other side of the equation to a delta as well; these variables include P, T, or n. R can not be a delta because it is a constant.