Solubility of CS2: Temperature Effects

  • Thread starter Thread starter Karan Punjabi
  • Start date Start date
  • Tags Tags
    Solubility
Click For Summary
SUMMARY

The solubility of carbon disulfide (CS2) decreases with increasing temperature, contrary to the expectation that higher temperatures would enhance solubility due to increased ionic product of water (Kw). The discussion highlights that while Kw increases with temperature, the weak solute-solvent interactions of CS2, a linear molecule with minimal dipole interactions, contribute to its declining solubility. Additionally, the evaporation rate of CS2 rises with temperature, further reducing its concentration in solution.

PREREQUISITES
  • Understanding of solubility principles in chemistry
  • Knowledge of ionic product of water (Kw) and its temperature dependence
  • Familiarity with molecular structure and interactions, specifically dipole interactions
  • Basic concepts of gas solubility and its relationship with temperature
NEXT STEPS
  • Research the relationship between temperature and solubility of gases in liquids
  • Study the effects of molecular structure on solute-solvent interactions
  • Examine the evaporation dynamics of volatile compounds like CS2
  • Explore the Antoine equation for predicting solubility trends with temperature
USEFUL FOR

Chemists, chemical engineers, and students studying physical chemistry, particularly those interested in solubility phenomena and molecular interactions.

Karan Punjabi
Messages
127
Reaction score
3
The picture here is the solubility of CS2 as per the variation of temperature . As per my knowledge when we increase the temperature the ionic product of water increases i.e H+ and OH- ions increases so due to this the ion induced dipole interaction must increase hence the solubility must increase right? If I'm wrong at any point please correct me there and guide me. Thankyou
 

Attachments

  • Screenshot_20160429-232820.png
    Screenshot_20160429-232820.png
    25.2 KB · Views: 703
Chemistry news on Phys.org
Yes (Kw goes up with temperature), no, it doesn't have to change the solubility of CS2, especially as the amounts of ions are still pretty minute.
 
Borek said:
Yes (Kw goes up with temperature), no, it doesn't have to change the solubility of CS2, especially as the amounts of ions are still pretty minute.
Ohk if you are right then why its solubility is decreasing
 
Probably for the same reason solubility of most inert gases goes down with the temperature (even if CS2 at STP is not a gas).
 
Thats what...I want to know the reason...
 
Could CS2 have poor solute-solvent interaction? It is a linear molecule with very weak diametrically opposing dipoles. As temperature increases the evaporation of CS2 would increase leaving a lower concentration remaining in solution. Wikipedia - Physical Properties of CS2 does show a rapid decrease in concentration as a function of temp. Here's the published trend.
upload_2016-5-2_21-11-25.png
 
  • Like
Likes Karan Punjabi

Similar threads

  • · Replies 4 ·
Replies
4
Views
2K
Replies
14
Views
3K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 8 ·
Replies
8
Views
2K
  • · Replies 10 ·
Replies
10
Views
21K
Replies
4
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
Replies
3
Views
2K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 3 ·
Replies
3
Views
2K