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Results tagged with physical-chemistry
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user 3879
The study of chemical systems using the laws and concepts of physics. This usually requires the techniques of thermodynamics, statistical mechanics and quantum mechanics.
3
votes
Accepted
How to derive van 't Hoff equation for Henry's law constant?
Assuming Henry's coefficient $\mathcal{H}_i$ is defined by the following relation:
$$
\mathcal{H}_i = \gamma_i^\inf \cdot p_i^\mathrm{sat}
$$
Where $\gamma_i^\inf$ is the activity coefficient for an i …
- 1,046
0
votes
Why is the enthalpy of vaporization greater than the enthalpy of fusion?
Enthalpy is state function which is defined as $H = U + pV$, it includes internal energy of the system and energy to create the system volume (boundary work).
Internal energy may be decomposed in se …
- 1,046
4
votes
What is Inversion Temperature in terms of Joule Thomson Effect? Does Critical Temperature de...
This is half-part answer to your question:
Joule Thompson Inversion Temperature is the temperature when Joule Thomson coefficient $\mu_\mathrm{JT}$ is null.
$$\mu_\mathrm{JT} = \left(\frac{\partial …
- 1,046
3
votes
Accepted
How to trace an energy versus time diagram?
Assuming you want to plot heat exchanged by reaction versus time, you need at least to know what reaction you want to study. Then you will have to assess two different quantities: enthalpy if the proc …
- 1,046
2
votes
calculating Kp with partial pressures
I do agree with your point and Philipp explanation. Getting more formal, your $K_p$ at 35°C is:
$$ K^\circ_p(308.15\,\mathrm{K}) = \frac{\left(\frac{p_\mathrm{tot}}{p_\circ}\right)^2\chi^2_\mathrm{NO …
- 1,046