Which has the highest boiling point H2O H2S or H2Se?
Among H2O,H2S,H2Se and H2Te, the one with the highest boiling point is H2O because of intermolecular hydrogen bonding which leads to molecular association and leads to higher energy for boiling.
Why boiling point of H2Te is higher than H2S?
H2Te has the highest molecular weight and thus it has the highest boiling point from H2S and H2Se.
Is H2Se stronger than H2S?
In binary acids such as H2S and H2Se, the H–Se bonds is longer than the H–S bonds as Se is larger than S. The H–Se bond is therefore weaker than the H–S bond and H2Se is thus a stronger acid than H2S.
Why the boiling point of H2S is less than H2O?
H2S molecules are involved in weaker hydrogen bonding than H2O molecules. This is because of the lower electronegativity of sulphur than oxygen. So, less energy is required to break the hydrogen bonds in H2S. Thus, the boiling point of H2S is lower than that of H2O.
Why does H2S have lower boiling point than H2Se?
This essentially means H2Se is a bigger molecule than H2S meaning the Van Der Waal forces (London forces) on H2Se is stronger than on H2S which means it takes more energy to break the intermolecular forces for H2Se than H2S- this leads to H2S having the lower boiling point.
Which one has the lowest boiling point among H2O H2S H2Se H2Te?
Which has lowest boiling point (1) H2O (2) H2S (3) H2Se (4) H2Te.? H2S has the lowest boiling point. As the molar mass increases boiling point of the hydrides increases except H2O. The exception of water is due to intermolecular hydrogen bonding among the water molecules.
Which has lowest boiling point H2O H2S H2Se H2Te?
Explanation. H2O > H2Te > H2Se > H2S. Hence H2S has the lowest boiling point.
What is the boiling point of H2Se?
-42.25°F (-41.25°C)Hydrogen selenide / Boiling point
How do intermolecular forces affect the boiling point of substances?
Higher the intermolecular forces between the liquid particles, harder it is for it to escape into the vapor phase, ie., you need more energy to convert it from liquid to the vapor phase, in other words, higher its boiling point.
Why does water have a higher boiling point than H2S H2Se and H2Te?
By comparing H2O with H2S, H2Se and H2Te, we can see that the boiling points will increase from H2S to H2Te because of the increasing molecular weights. That means H2O is supposed to have a lower boiling point then H2S, but the opposite can be observed and thus be explained by the formation of strong hydrogen bonds.
Which one has the lowest boiling point water H2S H2Se H2Te?
H2S < H2Se < H2Te < H2O This is the correct boiling point order.
Which of the following has the lowest boiling point and why H2S H2Se?
What makes water unique in its properties when compared to H2S or H2Se?
In Water, the oxygen atom is highly electronegative and can polarize (partially) the hydrogen atoms, thus hydrogen-hydrogen bonds between the H2O molecules can be formed creating a very high boiling point. In H2S those bonds don’t exist, because sulfur is much less electronegative.
Why does H2S have a low boiling point than H2Se?
How do you know which molecule has a higher boiling point?
In general, larger molecules have higher boiling points than smaller molecules of the same kind, indicating that dispersion forces increase with mass, number of electrons, number of atoms or some combination thereof.
Why does hydrogen bonding increase boiling point?
The evidence for hydrogen bonding The increase in boiling point happens because the molecules are getting larger with more electrons, and so van der Waals dispersion forces become greater.
Which has the lowest boiling point H2O H2S H2Se H2Te?
Why water is liquid at room temperature but H2S and H2Se are gases?
Dear, Both H2S and H2O undergo intermolecular hydrogen bonding. Oxygen atom is more electronegative than sulphur atom hence the strength of hydrogen bonding between H2O molecules is much greater than the strength of hydrogen bonding between H2S molecules. Consequently H2O is liquid while H2S is gas.
What causes a compound to have a higher boiling point?
Large molecules have more electrons and nuclei that create van der Waals attractive forces, so their compounds usually have higher boiling points than similar compounds made up of smaller molecules. It is very important to apply this rule only to like compounds.
What does the boiling point depend on?
The boiling point of a liquid depends on temperature, atmospheric pressure, and the vapor pressure of the liquid. When the atmospheric pressure is equal to the vapor pressure of the liquid, boiling will begin.