Why does water show high boiling point as compared to hydrogen sulphide give reason for your answer?

The water shows a high boiling point as compared to hydrogen sulfide is because of the high electronegativity of oxygen, due to which water exists as associated molecules. To break up the hydrogen bonds, energy is required in large amounts. Hence, the boiling point of water is higher.

Why hydrogen sulphide has lower boiling point than water?

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 hydrogen sulphide have a very low melting point?

Intermolecular forces are much weaker than the strong covalent bonds in molecules. The covalent bonds are not broken. Relatively little energy is needed to overcome the intermolecular forces, so small molecular substances have low melting and boiling points.

Which property explains why the boiling point of H2O is so much higher than other hydrides within the same periodic group?

The robustness of hydrogen bond of water also explains its anomalous high boiling point and high melting point compared to other hydrides in the same group in the Periodic table as we go down in the order of increasing molecular weight.

Why water has the highest boiling point?

Water has an unusually high boiling point for a liquid. Water is made up of oxygen and hydrogen and can form hydrogen bonds, which are particularly strong intermolecular forces. These strong intermolecular forces cause the water molecules to “stick” to one another and resist transition to the gaseous phase.

Which has highest magnitude of hydrogen bonding?

Hence, the expected order of the extent of hydrogen bonding is HF > H2O > NH3. But, the actual order is H2O > HF > NH3. Although fluorine is more electronegative than oxygen, the extent of hydrogen bonding is higher in water.

Why H2O has higher boiling point?

Water molecules form a bulky molecule and it is very difficult to break its bonds. To break all its bonds, a large amount of the energy is required. Thus, $H2O$ has a higher boiling point than HF.

Why does water have higher boiling point than HF?

Due to strong hydrogen bonding of water it has higher bond energy as compared to HF thats why it has higher boiling point. Although HF has strongest H- bonds but water has higher boiling point than HF.

Why does water have a higher melting point?

hydrogen bonding is the strongest intermolecular force, each water molecule can form hydrogen bonding, Which makes to separate one water molecule from other water molecule very difficult. Thus water has high MP and BP.

Why do larger molecules have higher melting points?

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.

Why does water have unusually high boiling point?

Explanation: Water has an unusually high boiling point for a liquid. This is related to the intermolecular forces between water molecules; when a liquid has particularly large intermolecular forces, it will have a higher boiling point.

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 is the boiling point of H2S and H2O?

The hydrogen sulfide molecule (H2S) and the water molecule (H2O) are very similar. However, the boiling point of hydrogen sulfide is -60*C whereas the boiling point of water is 100*C. How can the intermolecular forces explain this difference? – INTERMOLECULAR FORCES The hydrogen sulfide molecule (H2S) and the water molecule (H2O) are very similar.

Why does water have a high melting and boiling point?

You need energy for this… So that’s why water has high melting and boiling point ( with high melting and boiling points, you provide more energy in form of heat to break the bonds). Water forms two Hydrogen bonds per molecule, due to this greater intermolecular forces build up which lead to high melting and boiling points.

Why does H2O have a lower melting point than ice?

In ice, each atom on the H2O molecule is only positive or negative by a fraction of an electron, and so the forces of attraction are only a fraction as strong. Weaker forces of attraction mean less energy is required to separate the particles. Therefore, the melting point is lower.