• Support PF! Buy your school textbooks, materials and every day products Here!

COCl2(g) -> CO(g)+Cl2(g)

  • Thread starter lha08
  • Start date
  • #1
164
0
COCl2(g) --> CO(g)+Cl2(g)

Homework Statement


Consider the reaction carried out at 25 degrees celsius and 1 atm: COCl2(g)-->CO(g)+Cl2(g)
In what temperature range will the reaction become (or not become) spontaneous?


Homework Equations





3. The Attempt at a Solution [/b
My hunch is that i have to use ΔG=ΔH-TΔS and set ΔG equal to zero but then i'm not sure how am i supposed to get a temperature range...help please!

Homework Statement





Homework Equations





The Attempt at a Solution

 

Answers and Replies

  • #2
Mapes
Science Advisor
Homework Helper
Gold Member
2,593
17


Your hunch is correct. The temperature range would be bounded by ΔG=0 and also any temperature at which the components are eliminated: e.g., the boiling temperature of the gases, the dissociation temperature of CO, etc. I'm not sure any of these will be relevant, but it might explain why there's a limited temperature range.
 
  • #3
164
0


Your hunch is correct. The temperature range would be bounded by ΔG=0 and also any temperature at which the components are eliminated: e.g., the boiling temperature of the gases, the dissociation temperature of CO, etc. I'm not sure any of these will be relevant, but it might explain why there's a limited temperature range.
How do we know whether the temperature will be above or below that of the temperature that is bounded by ΔG=0?
 
  • #4
Mapes
Science Advisor
Homework Helper
Gold Member
2,593
17


I don't know. It's something you have to check, just as if you were designing an industrial process to run the reaction.
 
  • #5
10
0


I think you'll need extra information, especially the enthalpy of formation for each species, or the entropy of formation. then you can find T
 

Related Threads for: COCl2(g) -> CO(g)+Cl2(g)

Replies
28
Views
2K
  • Last Post
Replies
11
Views
5K
Replies
1
Views
3K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
2
Views
941
  • Last Post
Replies
2
Views
340
  • Last Post
Replies
4
Views
2K
Replies
5
Views
34K
Top