Why do different substance have different melting and boiling points?

Why do different substance have different melting and boiling points?

Different substances have different melting and boiling points because of the different strengths of the bonds between the molecules.

When two liquids have different boiling points?

If a mixture of two miscible liquids with different boiling points is heated to boiling, the vapour will not have the same composition as the liquid; it will be richer in the more volatile component.

How do different substances affect the boiling point of water?

The addition of solutes or other substances usually changes the boiling point. Sugar, salt or other non-volatile solutes in water will usually make the boiling point higher. Alcohol, in contrast, is a volatile chemical that lowers the boiling point of water.

How solid and liquid states of matter differ in boiling point and melting point?

Solids have high melting and boiling points. Liquids have comparatively low melting and boiling points. Gases have extremely low melting and boiling points.

Why do different liquids have different boiling points Class 11?

The boiling point of a liquid depends on the intermolecular forces present between the atoms or molecules in the liquid since you must disrupt those forces to change from a liquid to a gas. The stronger the intermolecular forces, the higher the boiling point.

How do you separate two miscible liquids with different boiling points?

A mixture of two miscible liquids can be separated by the process of fractional distillation. The separation of two liquids by fractional distillation depends on the difference in their boiling points. Therefore, the answer is option (b) – Miscible liquids can be separated by fractional distillation.

What’s the difference between boiling point and normal boiling point?

A. “Normal boiling point” is a boiling point of a liquid at normal (standard) pressure and temperature, while “boiling point” is measured at any other conditions of pressure and temperature. “Normal boiling point” refers to 1 g of substance: “boiling point” refers to any other amount of substance.

What is the main difference between melting point and boiling point?

Complete answer:

Melting point	Boiling point
When there is conversion of solid state to a liquid state at a specific point then that point is known as melting point.	When the atmospheric pressure equals to the vapour pressure of the liquid that temperature point is known as boiling point.

How does normal boiling point differ from boiling point?

The key difference between normal boiling point and standard boiling point is that the boiling temperature at 1 atm is the normal boiling point, whereas the boiling temperature at 1 bar is the standard boiling point. Thus, at this temperature, the state of the substance changes from liquid to vapour.