Solubility of CS2: Temperature Effects

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Discussion Overview

The discussion revolves around the solubility of carbon disulfide (CS2) in relation to temperature changes. Participants explore the theoretical implications of temperature on solubility, particularly focusing on ionic interactions and solute-solvent dynamics.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant suggests that increasing temperature leads to a higher ionic product of water, which they believe should increase solubility due to enhanced ion-induced dipole interactions.
  • Another participant counters that while the ionic product (Kw) increases with temperature, it does not necessarily imply an increase in the solubility of CS2, especially given the low concentration of ions.
  • A subsequent reply questions the observed decrease in CS2 solubility with rising temperature, seeking clarification on the underlying reasons.
  • Another participant proposes that the solubility of CS2 may decrease with temperature due to poor solute-solvent interactions, noting that as temperature rises, the evaporation of CS2 could lead to a lower concentration in solution.
  • A participant suggests looking up external resources for further information on the relationship between temperature and gas solubility.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between temperature and the solubility of CS2, with no consensus reached on the reasons for observed solubility trends.

Contextual Notes

Participants reference the ionic product of water and solute-solvent interactions, but the discussion lacks clarity on specific mechanisms and assumptions regarding solubility behavior at varying temperatures.

Karan Punjabi
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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
 

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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
 
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