## standard states

TarynLane2J
Posts: 30
Joined: Sat Jul 22, 2017 3:00 am

### standard states

For all standard states in general, is the pressure 1 atm or 1 bar? or does it not matter?

SPandya1F
Posts: 51
Joined: Fri Sep 29, 2017 7:04 am
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### Re: standard states

Standard pressure is 1 atm. 1 atm is equivalent to 1.01325 bar. Although they are close, 1 bar is not standard pressure.

Ridhi Ravichandran 1E
Posts: 35
Joined: Sat Jul 22, 2017 3:01 am

### Re: standard states

1 bar is usually standard pressure, but 1 atm is sufficient because it is close enough to one bar. 25 degrees celsius is not technically standard temperature, but it is the temperature at which most reactions take place.

Another requirement for "standard state" is that the elements must be in their pure forms.

Ya Gao
Posts: 52
Joined: Fri Sep 29, 2017 7:04 am
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### Re: standard states

I think the standard pressure is 1bar but because 1atm is so close to 1bar, we consider 1atm the standard pressure as well.

Return to “Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)”

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