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SCIENCE PROGRESS 



Critical Point that observation is made. The following table 

 emphasises this : 



The Law of Constant Volume Relations among the Complex 

 n- Paraffins near the Melting Point 



The relations between the molecular volumes near the melting 

 point are similar to those for such compounds near the critical 

 point. 



It will be now useful to compare the volumes of normal 

 paraffins at the Normal Boiling Point : 



The rule is very closely followed at the boiling point. Diver- 

 gences therefrom can be ascribed to differences in constitution ; 

 e.g. lengthening of the Hydrocarbon chain. 



We now discuss a similar relation in the Sn-Pb alloys — a 

 series of similar substances differing in composition by Sn. 



The Laiv of Constant Volume Relations in the Sn-Pb Alloys 



near the Melting Point. 



