DalisAndy
Hazard to Others
Posts: 129
Registered: 8-5-2015
Member Is Offline
Mood: No Mood
|
|
Telling if a reaction will occur
I was wondering how one would calculate if a reaction will take place? I have an AP Chem textbook. If that would help
Elements Collected: 19/81 (Excluding all radioactive, using placecard for those)
Any tips or good sources are welcome.
|
|
|
blogfast25
International Hazard
Posts: 10562
Registered: 3-2-2008
Location: Neverland
Member Is Offline
Mood: No Mood
|
|
Have a look at this, just for starters:
http://hyperphysics.phy-astr.gsu.edu/hbase/chemical/gibbspon...
For ΔG < 0, a chemical reaction is thermodynamically favourable. That theory and the related theory of reaction kinetics are complex and cannot be
summarised in a few sentences here.
[Edited on 31-7-2015 by blogfast25]
|
|
|
diddi
National Hazard
Posts: 723
Registered: 23-9-2014
Location: Victoria, Australia
Member Is Offline
Mood: Fluorescent
|
|
how about redox potentials?
for inorganics anyway 
Beginning construction of periodic table display
|
|
|
blogfast25
International Hazard
Posts: 10562
Registered: 3-2-2008
Location: Neverland
Member Is Offline
Mood: No Mood
|
|
They only work in watery solutions. As such they are a 'special case' of chemical thermodynamics and kinetics.
|
|
|
softbeard
Hazard to Self
Posts: 69
Registered: 23-7-2013
Member Is Offline
Mood: moody
|
|
In general, a reaction has thermodynamic impetus to go forward if the equation's Gibbs Free Energy change (delta G) is negative (<0). But that's
just thermodynamics. It says nothing about a reaction's kinetics which may be extremely slow and take a very long time before equilibrium is achieved.
Note that the delta G for a reaction may be a strong function of temperature, pressure (in the case of gases/vapours), or both. So it is very
important you consider reaction conditions (eg. 273 Celcius, 1 atm.) while asking this question.
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
