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Two students Rishi and Khushi were prepatring for International Chemistry Olympiad.They had come across a question .In that,a table of boiling point of members of hmuologous series of alkanes was given and also. Predict the trend observed. What reason can be attributed to the above trend? |
Answer» Solution :The VAN der Waal's forces which HOLD the non ALKANE molecules are weak and have a very short range. The larger the molecule, the stronger are the intermo lecular forces. Since boiling point depends upon the intermolecular forces, the boiling points of alkanes increase With increase in chain length. Also as the molecular weight increases, the velocity of the molecule decreases at a particular temperature. Thus, alkanes tend to be in a LIQUID or a solid state. | |