MCQ
In an alkane if the value of n = 19, it is:
- ASolid
- BLiquid
- CGaseous
- DNone of the above
✓
Answer
- Solid
Explanation:
The homologous of alkanes larger than hexadecane are solids, solid alkanes are normally soft, with low melting points. These characteristics are due to strong repulsive forces generated between electrons on neighboring atoms, which are in close proximity in crystalline solids.
The strong repulsive forces counterbalance the weak van der Waals forces of attraction, alkanes are almost completely insoluble in water. If n = 19, then the alkane C19H40 is a solid.
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