The boiling suggest of $\ceH_2S$ is higher than $\ceHCl$. Is this as result of the greater variety of hydrogen bond that $\ceH_2S$ can form compared to $\ceHCl$? I found this explanation for the comparison in between $\ceH_2O$ and $\ceHF$ so ns tried to use it here also, however I"m not also sure the the intermolecular forces among $\ceH_2S$ and also $\ceHCl$ molecules have the right to be identified as "hydrogen bond" (which should happen only because that $\ceF,O,N$).

So how deserve to the better boiling suggest of $\ceH_2S$ compare to $\ceHCl$ it is in explained?

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Definition of the hydrogen bond

In 2011, a modern and an ext general IUPAC definition of what constitutes a hydrogen bond to be recommended (Arunan et al., 2011). The meaning is proclaimed as such:

The hydrogen bond is one attractive interaction in between a hydrogen atom native a molecule or a molecule fragment $\ce X-H$ in which $\ce X$ is an ext electronegative than $\ce H$, and also an atom or a team of atom in the exact same or a different molecule, in which over there is evidence of shortcut formation.

It appears that the an interpretation of climate hydrogen link which has interactions only with $\ce F, O or N$ seems too narrow and also restrictive, which ns personally feeling is without doubt the case.

Therefore, it is perfect fine to say the $\ce H_2S$ provides hydrogen bond with other $\ce H_2S$ molecules and that $\ce HCl$ makes hydrogen bond with various other $\ce HCl$ molecules.

Explaining the cook points

Wikipedia offers the boiling clues of $\ce H_2S$ and also $\ce HCl$ together $\ce -60 ^\circ C$ and $\ce -85.05 ^\circC$ respectively. Once rationalising boiling point differences, the first consideration is always the stamin of the intermolecular forces between the molecules in the liquid.

The Pauling electronegativities the $\ce S$ and also $\ce Cl$ are $\ce 2.58$ and $\ce 3.16$ respectively. Evidently, the electron deficiency in the hydrogen atom external inspection to $\ce Cl$ is much more severe compared to that bonded come $\ce S$. This suggests that $\ce HCl$ molecule are qualified of developing stronger hydrogen bonds. However, that is additionally important to think about the variety of hydrogen bonds formed in between molecules, as you have actually already provided in your question. Each $\ce H_2S$ can type 4 hydrogen bond with other $\ce H_2S$ molecules, whereas every $\ce HCl$ molecule deserve to only form 2 hydrogen bond with various other $\ce HCl$ molecules. Therefore, despite the truth that $\ce HCl$ molecule can type stronger hydrogen bonds in between themselves, the intermolecular attractions between $\ce H_2S$ molecule still prevail as they space twice together numerous. Thus, $\ce H_2S$ has actually a greater boiling allude than $\ce HCl$.


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