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Pentane and n-pentane are both alkane compounds with the same molecular formula and weight, namely C5H12. However, their molecular structures differ, leading to some differences in properties and applications

The molecular structure of pentane is linear (CH3CH2CH2CH2CH3), while the molecular structure of n-pentane is regular (CH3CH2CH2CH3). This structural difference leads to differences in their physical properties. Pentane is a colorless, odorless, and volatile liquid that is flammable and insoluble in water. N-pentane also has similar properties, but its boiling point is slightly higher compared to pentane

Due to different molecular structures, the chemical properties of pentane and n-pentane also differ. Pentane, as a non-polar compound, is not prone to chemical reactions with other compounds. N-pentane has high convection and flammability, and is prone to react with oxygen to produce combustion

In addition, there are some differences in the application of pentane and n-pentane. Pentane is commonly used as a solvent and fuel, and has a wide range of applications in chemical, printing, and painting fields. N-pentane is commonly used as a standard for calibration and analytical experiments of detection instruments

In summary, although pentane and n-pentane have the same molecular formula and weight, they differ in physical properties, chemical properties, and applications due to their different molecular structures. By deeply understanding and studying these two compounds, we can better apply their advantages in their respective fields and promote the development and innovation of related fields.