Questions & Answers

State the difference between melting and boiling point.

Answer Verified Verified
Hint: We know that the melting point, and the boiling point can be differentiated on the basis of conversion of the states of matter at the atmospheric pressure. So, let us differentiate both the temperature in consideration with the pressure, and other factors.

Complete answer:
Now, we will differentiate the melting point, and the boiling point.

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.
This is basically used for solid state compounds, or molecules.It is used for the compounds, or molecules existing in the liquid state.
It also differs with the pressure, or we can say defined as standard pressure.It differs with the pressure present in the surroundings.
The ionic compounds represent the high melting points, as the forces between the ions are strong.The boiling point is determined in consideration with the structure of the molecule.

> As we discussed the differences between the boiling, and the melting point. Let us explain the dependence of boiling point on the pressure of surroundings.
> We know that in the mountain regions, the pressure is lower than that of the pressure at the sea level. So, the water will boil below the 100$\circ$C, as there will be lower atmospheric pressure in the surroundings.
> In the last, we can conclude that the melting point is the temperature attained while converting solid to a liquid state, and the boiling point is the temperature when atmospheric pressure equals the vapour pressure as mentioned.

Note: Don’t get confused about the point that ionic compounds have a high melting point because the melting point depends on the interactions between the molecules, and their symmetry. The strong interactions will lead to the higher melting point.
Bookmark added to your notes.
View Notes