9
votes
Accepted
Why does band heads arise in vibrational-rotational spectra?
It's been a long time since I did this, but from my old notes... this is caused by the rotational constant $B$ being different in the two vibrational states $v = 0$ and $v = 1$. Generally we have that ...
- 65.6k
5
votes
Accepted
Understanding the molar free energy to simulate phase separations (Na2O-SiO2)
In an Ideal solution, based on how many ways one can randomly arrange the constituents, one gets:
$\Delta S_{mix} = -R(X_{A} \ln{X_{A}} + X_{B} \ln{X_{B}})$ with $X_{A}+X_{B} = 1$ being the relative ...
- 7,591
3
votes
Cubic nature of van der Waals' gas equation
The van der Waals equation describes the isotherms of a gas with respect to pressure and volume. The first van der Waals root (the first solution of the cubic equation) will give you the dew point, ...
- 81
1
vote
Why exactly does molten NaCl explode, when it is poured into water?
I suspect rather strongly that this is a coulombic explosion.
This phenomenon was only recently described to explain the violent explosion of alkali metals in water. The explosion of alkali metals in ...
Only top scored, non community-wiki answers of a minimum length are eligible