Question

The melting points of the three liquids are $280K$, $320K$, and $360K$. The order of intermolecular forces of attraction between these three liquids A, B, C are in the order:

B$>$C$>$A.

Label the boiling points for each liquid.

Answer 1

1. The temperature at which a solid-state of matter melts into its liquid state at atmospheric pressure is called its melting point whereas, intermolecular forces are the forces of attraction or repulsion which act between neighboring particles of a state of matter.
2. Hence, the greater the intermolecular force of attraction, the more temperature or energy is required to break the bond of attraction between the particles.
3. Thus, it can be said that the melting point of a liquid depends on the intermolecular force of attraction between its particles.
4. So, according to the given decreasing order of intermolecular force of attraction, the melting points are:

1. $B=360K$
2. $C=320K$
3. $A=280K$