Good evening experts
Please explain this ... I am getting confused
Thanks in advance
Factors affecting melting point :Effect of pressure
Solids contract on melting -the melting point decrease with increase in pressure because an increase in pressure favours contraction
Dear Student,
Generally for solids, upon melting the intermolecular space increases.
Thus, for most solids lowering the pressure would favour melting at a given temperature.
Since on increasing pressure intermolecular space decreases.
But for ice, the criteria is different.
This is because there is more intermolecular space in ice. Whereas intermolecular space is less in water.
So on increasing the pressure, the molecules tend to come closer and ice melts.
Hence the statement, For the solid that contract on melting increase in pressure decreases melting point as an increase in pressure favours contraction.
Regards
Generally for solids, upon melting the intermolecular space increases.
Thus, for most solids lowering the pressure would favour melting at a given temperature.
Since on increasing pressure intermolecular space decreases.
But for ice, the criteria is different.
This is because there is more intermolecular space in ice. Whereas intermolecular space is less in water.
So on increasing the pressure, the molecules tend to come closer and ice melts.
Hence the statement, For the solid that contract on melting increase in pressure decreases melting point as an increase in pressure favours contraction.
Regards