/mol), doesn't it Fred? :)))
Michel
- Original Message -
From: Robin van Spaandonk
To: vortex-l@eskimo.com
Sent: Sunday, June 04, 2006 5:13 AM
Subject: Re: Free Radical Chain Reactions
In reply to Michel Jullian's message of Sat, 3 Jun 2006 20:58:38
+0200:
Hi,
[snip]
The spreadsheet
-
From: Robin van Spaandonk
To: vortex-l@eskimo.com
Sent: Sunday, June 04, 2006 5:13 AM
Subject: Re: Free Radical Chain Reactions
In reply to Michel Jullian's message of Sat, 3 Jun 2006 20:58:38
+0200:
Hi,
[snip]
The spreadsheet did the dH algebra like it's own mentor told it, Fred
In reply to Michel Jullian's message of Sun, 4 Jun 2006 12:38:24
+0200:
Hi,
[snip]
So here is CHEMIX's thermochemistry answer for the reaction we discussed
(copy-paste):
2H2(g) + O2(g) = 2H2O(l) + 571.6kJ
which solves the controversy (produced energy is equal to -dH=572kJ/mol, not
to
PROTECTED]
To: vortex-l@eskimo.com
Sent: Monday, June 05, 2006 12:40 AM
Subject: Re: Produced energy is enthalpy change dH (was Re: Free Radical
Chain Reactions)
In reply to Michel Jullian's message of Sun, 4 Jun 2006 12:38:24
+0200:
Hi,
[snip]
So here is CHEMIX's thermochemistry answer
vortex-l@eskimo.com
Sent: Friday, June 02, 2006 4:52 PM
Subject: Re: Free Radical Chain Reactions
Actually 2 H2 + O2 2 H2O has about 14 reaction steps.
http://www.cheresources.com/reactionkinetics3.shtml
Another important consideration is the formation of chain reactions. The
basic
@eskimo.com
Sent: Friday, June 02, 2006 4:52 PM
Subject: Re: Free Radical Chain Reactions
Actually 2 H2 + O2 2 H2O has about 14 reaction steps.
http://www.cheresources.com/reactionkinetics3.shtml
Another important consideration is the formation of chain reactions.
The
basic
Subject: Re: Free Radical Chain Reactions
Michel Jullian wrote:
BTW Fred, have you given some thought to our enthalpy vs Gibbs
controversy?
Which energy can be recovered from the reaction below do you think, the
enthalpy change or the Gibbs free energy change?
Is that a trick question
- Original Message -
From: Frederick Sparber [EMAIL PROTECTED]
To: vortex-l@eskimo.com
Sent: Saturday, June 03, 2006 3:53 PM
Subject: Re: Free Radical Chain Reactions
Michel Jullian wrote:
BTW Fred, have you given some thought to our enthalpy vs Gibbs
controversy?
Which energy can
: "Frederick Sparber" [EMAIL PROTECTED]
To: vortex-l@eskimo.com
Sent: Saturday, June 03, 2006 7:42 PM
Subject: Re: Free Radical Chain Reactions
Michel Jullian wrote: Fred I really meant
"the reaction below", H2 combustion in O2: 2 H2 + O2
2 H2O Gibbs Free Energy from CRC
How do they do that?
My calculations are always using dG algebra like my mentors told me.
BTW. I don't have Excel. :-(
Fred
- Original Message -
From: Michel Jullian
To: vortex-l@eskimo.com
Sent: 6/3/2006 12:13:36 PM
Subject: Re: Free Radical Chain Reactions
My
, June 03, 2006 8:35
PM
Subject: Re: Free Radical Chain Reactions
How do they do that?
My calculations are always using dG algebra like my mentors
told me.
BTW. I don't have Excel. :-(
Fred
- Original Message -
From:
Michel
Michel.
In the reaction 2 H-H + O-O 2 H-O-H you are breaking three 498,000 Joule/mole
(5.17 eV Bonds) = 1.490E6 joules input to make four 498,000 Joule/mole (5.17 eV bonds)
= 1.99E6 joules for the 2 H-O-H molecules.
Hence, you should get 1.99E6 - 1.49E6 = 498,000 Joules free energy.
OTOH,2
Fred,
http://antoine.frostburg.edu/chem/senese/101/thermo/:
"estimating H from
bond enthalpies
strategy: imagine reaction as a) dissociation of reactants into atoms, b)
recombination of atoms into products.
Add enthalpies for all product bonds
Add enthalpies for all
kJ/mole.
Good night (for good this time),
Michel
- Original Message -
From:
Michel Jullian
To: vortex-l@eskimo.com
Sent: Sunday, June 04, 2006 12:39
AM
Subject: dH vs dG (was Re: Free Radical
Chain Reactions)
Fred,
http://antoine.frostburg.edu/chem/senese/101
In reply to Michel Jullian's message of Sat, 3 Jun 2006 20:58:38
+0200:
Hi,
[snip]
The spreadsheet did the dH algebra like it's own mentor told it, Fred.
You could try downloading the trial version of CHEMIX (Google it) ans see what
their thermochemistry section gives for this reaction? Mine
Actually 2 H2 + O2 2 H2O has about 14 reaction steps.
http://www.cheresources.com/reactionkinetics3.shtml
"Another important consideration is the formation of chain reactions. The basic premise of chain reaction mechanisms is also that free radicals play a leading role in the destruction
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