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Butane and propane are two common alkane compounds, which have some differences in structure and properties. The chemical formula of butane is C4H10, and the structural formula is CH3CH2CH2CH3. It consists of four carbon atoms and ten hydrogen atoms. The chemical formula of propane is C3H8 and the structural formula is CH3CH2CH3. It consists of three carbon atoms and eight hydrogen atoms

Butane and propane have different structures. Butane has one more carbon atom than propane, therefore it has a larger molecular weight. This also results in butane having a higher boiling point and density than propane. Additionally, due to the presence of more carbon atoms in butane molecules, its melting point is relatively high

Propane and butane also have certain differences in physical properties. Propane is a colorless and odorless gas, while butane is a colorless liquid, often in a liquid state at room temperature. This is because butane has a lower boiling point, while propane has a higher boiling point

In terms of chemical properties, butane and propane also have differences. Propane is a highly stable molecule that is not easily reactive with other compounds. However, due to structural differences, butane is more prone to chemical reactions than propane. In addition, due to the presence of more carbon atoms in butane molecules, its combustion heat value is also higher

In addition, there are differences in the application of butane and propane. Due to its stable physical properties and easy storage, propane is often used as a fuel gas. Butane has a higher degree of liquefaction than propane, so it has certain applications in certain special applications, such as nozzle fuel and liquefied gases

In summary, butane and propane are two common alkane compounds, which have some differences in structure, physical properties, chemical properties, and applications. Understanding the difference between butane and propane helps us to have a more comprehensive understanding and application of these two compounds.