Degree symbol
Moderators: Chem_Mod, Chem_Admin
-
- Posts: 121
- Joined: Sat Jul 20, 2019 12:15 am
Degree symbol
What does it mean when you put a degree symbol or knot symbol with delta G or any other variable? What is the difference between that and when the symbol is used for temperature?
-
- Posts: 140
- Joined: Sat Sep 07, 2019 12:17 am
Re: Degree symbol
(knot) just means that the E or Gibbs free energy are at standard conditions. So 25 degrees C, 1 atm, and 1.0 M.
-
- Posts: 120
- Joined: Thu Jul 25, 2019 12:17 am
Re: Degree symbol
The degree symbol indicates that the reaction you are observing was done under standard conditions (298K, 1 bar)
-
- Posts: 55
- Joined: Sat Aug 24, 2019 12:16 am
Re: Degree symbol
The degree symbol indicates standard conditions for the process while without the degrees indicates whatever conditions the reaction is given in.
-
- Posts: 101
- Joined: Fri Aug 30, 2019 12:17 am
Re: Degree symbol
The symbol means standard of reaction, so for example standard reduction potential (E knot) is the voltage difference between two standard electrodes and it is a constant. It is not related to the degrees symbol for temperature
-
- Posts: 104
- Joined: Thu Jul 25, 2019 12:18 am
-
- Posts: 109
- Joined: Thu Jul 11, 2019 12:17 am
- Been upvoted: 1 time
Re: Degree symbol
When you put a degree/knot symbol with delta G or any other variable, it means the reaction is under standard conditions. When the degree/knot symbol is not present after delta G or any other variable, the reaction is under the conditions given.
-
- Posts: 105
- Joined: Sat Aug 17, 2019 12:18 am
Re: Degree symbol
It means that a given variable or value is present in a reaction that has occurred at standard conditions, say 298 K or 1 atm.
-
- Posts: 102
- Joined: Wed Sep 18, 2019 12:15 am
Re: Degree symbol
The degree symbol means that the variable is the standard variable in that state. The standard value can be considered the default value to use in calculations, like for the standard enthalpy of formation, or the standard entropy of reaction.
-
- Posts: 101
- Joined: Fri Aug 09, 2019 12:17 am
Re: Degree symbol
In things like ΔH° and ΔG°, the degree symbol just means that those are the standard ΔH and ΔG values, aka the values under "standard conditions" (STP = 1.0 atm and 25°C).
It's used for temperature for degrees Celsius/Centigrade (°C) and degrees Fahrenheit (°F).
It's used for temperature for degrees Celsius/Centigrade (°C) and degrees Fahrenheit (°F).
-
- Posts: 102
- Joined: Sat Jul 20, 2019 12:17 am
Re: Degree symbol
The symbol indicates that the value of the variable is when the variable is at standard conditions, like at 1 ATM or at 298K.
Return to “Work, Gibbs Free Energy, Cell (Redox) Potentials”
Who is online
Users browsing this forum: No registered users and 7 guests