why is the boiling point of h2o higher than h2s

Full Answer

What type of bonding is hydrogen?

There are two types of H-bonding namely, intermolecular and intra-molecular H-bonding.

Is the boiling point of p-nitrophenol greater than that of o-nitrophenol?

Boiling point of p-nitrophenol is greater than that of o-nitrophenol.

Answer

Water has a higher boiling point than hydrogen sulphide. The intermolecular attractions between water molecules are stronger than H2S molecules due to hydrogen bonding in H2O due to high electronegativity and small size of oxygen atom.

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Why does H20 have a high boiling point?

Actually no. The reason that h20 has a high boiling point is because of an intermolecular force called hydrogen bounding ( which is separate from the OH bonds)

Which atoms are central to H2O?

In H2O and H2S , Oxygen and Sulphur are the central atoms respectively.Among Oxygen and Sulp hur , Oxygen is more electronegative (tendency to gain electrons) and hence it can form more number of intermolecular H bonding with other water molecules than Sulphur in H2S.

How is hydrogen bond formed?

Hydrogen bond is formed between two molecules if they have hydrogen and any of the three electronegative atoms (N,O,F) covalently bonded to each other . As there is no (NOF) in H2S , there is no hydrogen bond there although it has dipole dipole forces.

Why is water more polar than hydrogen sulfide?

Water is more polar than hydrogen sulfide because the oxygen atom is more electronegative than the sulfur atom. Also, hydrogen sulfide has weaker intermolecular forces (dipole forces, vander waal’s forces) compared to water resulting in a lower melting point and boiling point.

What determines the boiling point of a substance made up of discrete molecules?

The boiling points of substances made up of discrete molecules depends on the strengths of the intermolecular forces.

What is hydrogen bonding?

Hydrogen bonding is a form of dipole-dipole bonding, where 1 molecules partially positive side is attracted to another molecules partially negative side. Hydrogen bonding is one of the most powerful intermolecular forces, which is why water has such a high boiling point.

Why is hydrogen sulfide weaker than water?

In short, because the intermolecular forces holding the molecules together in a rigid, solid structure are much weaker in hydrogen sulfide than in water. The weaker the forces, the less energy is required to break them and the lower the melting point.