Why Do Exothermic Reactions Prefer Cold Temps

Watch
Retsek
Badges: 17
Rep:
?
#1
Report Thread starter 4 years ago
#1
How come an exothermic reaction's equilibrium's shifted to the right by colder temps and vice versa for endothermic reactions.

And I already know that if it's a reversible reaction the reverse of the reaction will be endothermic if the forward reaction is exothermic, just trying to get my head round this.

I think it would make more sense if it was the same as pressure as in a higher temp pushes the equilibrium towards the end with fewer moles, because higher temps mean higher pressure?
0
reply
EierVonSatan
Badges: 21
#2
Report 4 years ago
#2
Equilibria will oppose a change that you make to a system. You can look at it this way...

If you heat up a mixture it will try to cool itself down again - by favouring the endothermic reaction (takes in heat).

If you cool down a mixture it will try to warm itself up - by favouring the exothermic reaction (gives out heat).

Does that help?
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

What factors affect your mental health the most right now?

Anxiousness about lockdown easing (93)
5%
Uncertainty around my education (281)
15.12%
Uncertainty around my future career prospects (198)
10.65%
Lack of purpose or motivation (262)
14.09%
Lack of support system (eg. teachers, counsellors, delays in care) (82)
4.41%
Impact of lockdown on physical health (107)
5.76%
Loneliness (162)
8.71%
Financial worries (66)
3.55%
Concern about myself or my loves ones getting/having been ill (81)
4.36%
Exposure to negative news/social media (88)
4.73%
Lack of real life entertainment (102)
5.49%
Lack of confidence in making big life decisions (163)
8.77%
Worry about missed opportunities during the pandemic (174)
9.36%

Watched Threads

View All
Latest
My Feed